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K Crews - One of the best experts on this subject based on the ideXlab platform.
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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“Tension perpendicular to grain strength of wood, Laminated Veneer Lumber (LVL), and cross-banded LVL (CBLVL).”
2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
Manoochehr Ardalany - One of the best experts on this subject based on the ideXlab platform.
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Modeling of Laminated Veneer Lumber Beams with Holes Using Cohesive Elements
Journal of Structural Engineering-asce, 2015Co-Authors: Manoochehr Ardalany, Massimo Fragiacomo, Peter J. MossAbstract:AbstractOpenings are usually required in timber beams to allow services like plumbing, sewage pipes, and electrical wiring to run through. These openings can cause significant stresses perpendicular to the grain direction, which may create cracks in the timber due to the low tensile strength perpendicular to grain. Initiation and propagation of cracks markedly decrease the load-carrying capacity of a beam with a hole with respect to a beam without a hole. The use of plywood or screw reinforcement can recover the full capacity of the beam. Crack initiation and propagation in timber is a challenging issue that requires a good numerical model for an accurate prediction. Analysis methods such as linear elastic fracture mechanics (LEFM) have previously been used to predict the failure load of beams with holes with initial and iteratively extended crack length. In this paper, cohesive elements with traction-separation behavior are used for the modeling of the fracture layer in Laminated Veneer Lumber (LVL) beam...
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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“Tension perpendicular to grain strength of wood, Laminated Veneer Lumber (LVL), and cross-banded LVL (CBLVL).”
2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
Massimo Fragiacomo - One of the best experts on this subject based on the ideXlab platform.
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Modeling of Laminated Veneer Lumber Beams with Holes Using Cohesive Elements
Journal of Structural Engineering-asce, 2015Co-Authors: Manoochehr Ardalany, Massimo Fragiacomo, Peter J. MossAbstract:AbstractOpenings are usually required in timber beams to allow services like plumbing, sewage pipes, and electrical wiring to run through. These openings can cause significant stresses perpendicular to the grain direction, which may create cracks in the timber due to the low tensile strength perpendicular to grain. Initiation and propagation of cracks markedly decrease the load-carrying capacity of a beam with a hole with respect to a beam without a hole. The use of plywood or screw reinforcement can recover the full capacity of the beam. Crack initiation and propagation in timber is a challenging issue that requires a good numerical model for an accurate prediction. Analysis methods such as linear elastic fracture mechanics (LEFM) have previously been used to predict the failure load of beams with holes with initial and iteratively extended crack length. In this paper, cohesive elements with traction-separation behavior are used for the modeling of the fracture layer in Laminated Veneer Lumber (LVL) beam...
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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“Tension perpendicular to grain strength of wood, Laminated Veneer Lumber (LVL), and cross-banded LVL (CBLVL).”
2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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Fire performance of bolted connections in Laminated Veneer Lumber
Fire and Materials, 2009Co-Authors: Peter J. Moss, Andrew H. Buchanan, Massimo Fragiacomo, P.h. Lau, Terence Chung Biau ChuoAbstract:This paper describes an investigation into the fire performance of bolted tensile connections in Laminated Veneer Lumber (LVL) made from radiata pine. The capacity of the bolted connections depends on the embedment strength of the wood and on the yield moment of the bolts. The purpose of the research was to develop a prediction method for the time to failure of the connections when exposed to fire. An experimental investigation was carried out on the axial tensile strength of three types of bolted connections that utilized either wood or steel splice plates. Some specimens were tested at ambient temperatures while similar specimens were tested in fire conditions with a constant applied load. In addition, single-bolted connections were tested under constant elevated temperature conditions to determine the embedment strength of the LVL. Connections with no steel plates, or with steel plates slotted between the timber members, performed better than those with exposed steel. A simplified design approach is proposed, using an extension of the Johansen formulae, such that the embedment strength of the LVL depends on the temperature in the bolt. Copyright © 2009 John Wiley & Sons, Ltd.
Bruce Deam - One of the best experts on this subject based on the ideXlab platform.
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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“Tension perpendicular to grain strength of wood, Laminated Veneer Lumber (LVL), and cross-banded LVL (CBLVL).”
2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
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tension perpendicular to grain strength of wood Laminated Veneer Lumber lvl and cross banded lvl cblvl
21st Australasian Conference on the Mechanics of Structures & Materials ACMSM21, 2011Co-Authors: Manoochehr Ardalany, Bruce Deam, Massimo Fragiacomo, K CrewsAbstract:Recent experimental tests carried out on structural timber members have highlighted the importance of tension perpendicular to grain strength, particularly in beams with holes and notches, in connection regions, in curved beams, and in post-tensioned timber frames. Innovative engineered wood products such as Cross Banded Laminated Veneer Lumber (LVL-C) have been introduced into the market specifically to improve the perpendicular to grain properties of normal Laminated Veneer Lumber (LVL). This paper reports the results for a series of perpendicular to grain tension tests that were performed at the University of Canterbury using specimens of sawn timber Radiata Pine, LVL and LVL-C. The perpendicular to grain tension strengths of LVL were generally lower than those for sawn timber, but the LVL-C showed a significantly improved perpendicular to grain tensile strength. The paper also compares the experimental results with strengths predicted using both coupled elastic Finite Element Method (FEM) and Linear Elastic Fracture Mechanics (LEFM) models. These models were found to predict the average strength with reasonable accuracy.
Mikael Fonselius - One of the best experts on this subject based on the ideXlab platform.
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Effect of size on the bending strength of Laminated Veneer Lumber
Wood Science and Technology, 1997Co-Authors: Mikael FonseliusAbstract:The effect of size on bending strength has been experimentally determined for Laminated Veneer Lumber. Width was found to have no effect on bending strength. The effect of depth times length on bending strength obtained by the slope method was about 0.075, which is in good agreement with the results obtained by the shape parameter method. The effect of length is somewhat more severe than the effect of depth. Size was found to have no effect on modulus of elasticity or modulus of rigidity. In addition, the relationships between bending strength, modulus of elasticity and density of Laminated Veneer Lumber were experimentally modelled.
