The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Pj Pellicane - One of the best experts on this subject based on the ideXlab platform.
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Superposition Theory applied to nail glue joints in wood part ii stiffness behavior
Journal of Testing and Evaluation, 1992Co-Authors: Pj PellicaneAbstract:A model based on concepts involving nonlinear Superposition of nail and glue joint characteristics was examined to predict the load-slip (P-Δ) behavior of nail joints with elastomeric construction adhesives (nail/glue) in wood subjected to lateral loading. Four combinations of two wood species (lodgepole pine and hard maple) and two nail sizes (6d and 8d) were explored. One brand of commercially-available elastomeric construction adhesive was used. One-hundred-sixty-nine nail, glue, and nail/glue joints were tested to evaluate the P-Δ curve from the origin to 0.08125 in. (2.1 mm) slip. Theoretical predictions based on nail and glue joint stiffness were compared with experimental data from nail/glue joint tests. The results showed that the presence of glue used in conjunction with nails proved to substantially increase joint stiffness. Increases in joint stiffness from 25 to 100% per square inch (645 mm2) of bonded surface over the stiffness of joints without glue were realized. The Superposition model proved to be a reasonable predictor of nail/glue joint stiffness at levels of slip not exceeding 0.03 in. (0.762 mm). For slip levels greater than 0.03 in., Superposition consistently underpredicted (conservatively) joint stiffness for all four combinations of nail size and wood species studied. Therefore, Superposition has been shown to be an accurate predictor of joint stiffness in the range of slip values from which allowable loads are determined in the allowable stress and draft reliability-based design codes.
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Superposition Theory Applied to Nail/Glue Joints in Wood: Part II—Stiffness Behavior
Journal of Testing and Evaluation, 1992Co-Authors: Pj PellicaneAbstract:A model based on concepts involving nonlinear Superposition of nail and glue joint characteristics was examined to predict the load-slip (P-Δ) behavior of nail joints with elastomeric construction adhesives (nail/glue) in wood subjected to lateral loading. Four combinations of two wood species (lodgepole pine and hard maple) and two nail sizes (6d and 8d) were explored. One brand of commercially-available elastomeric construction adhesive was used. One-hundred-sixty-nine nail, glue, and nail/glue joints were tested to evaluate the P-Δ curve from the origin to 0.08125 in. (2.1 mm) slip. Theoretical predictions based on nail and glue joint stiffness were compared with experimental data from nail/glue joint tests. The results showed that the presence of glue used in conjunction with nails proved to substantially increase joint stiffness. Increases in joint stiffness from 25 to 100% per square inch (645 mm2) of bonded surface over the stiffness of joints without glue were realized. The Superposition model proved to be a reasonable predictor of nail/glue joint stiffness at levels of slip not exceeding 0.03 in. (0.762 mm). For slip levels greater than 0.03 in., Superposition consistently underpredicted (conservatively) joint stiffness for all four combinations of nail size and wood species studied. Therefore, Superposition has been shown to be an accurate predictor of joint stiffness in the range of slip values from which allowable loads are determined in the allowable stress and draft reliability-based design codes.
Hans-peter Loock - One of the best experts on this subject based on the ideXlab platform.
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Application of coupled mode Theory and coherent Superposition Theory to phase-shift measurements on optical microresonators.
Nanotechnology, 2016Co-Authors: Jack A. Barnes, Hans-peter LoockAbstract:Several mathematical models exist in the literature to describe the properties of optical resonators. Here, coupled mode Theory and coherent Superposition Theory are compared and their consistency is demonstrated as they are applied to phase-shift cavity ring-down measurements in optical (micro-)cavities. In the particular case of a whispering gallery mode in a microsphere cavity these models are applied to transmission measurements and backscattering measurements through the fiber taper that couples light into the microresonator. It is shown that both models produce identical relations when applied to these traveling wave cavities.
Li Shi-xia - One of the best experts on this subject based on the ideXlab platform.
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Researches on the Calculation Methods of Concrete Filled Steel Tube Columns Bearing Capacity
Construction & Design for Project, 2008Co-Authors: Li Shi-xiaAbstract:The present paper analyzes four design theories for calculating beating capacity of concrete filled steel tube such as unity Theory,similar concrete Theory,similar steel Theory and Superposition Theory,and researches their characteristics respectively.
Wang Tie-cheng - One of the best experts on this subject based on the ideXlab platform.
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Analysis of Calculation Methods of Concrete Filled Square Steel Tube Columns Bearing Capacity
Journal of Henan University, 2006Co-Authors: Wang Tie-chengAbstract:This paper analyzed three design theories for calculating bearing capacity of concrete filled square steel tube such as unity Theory,Superposition Theory and similar steel Theory.The three calculation expressions based on the three theories in domestic codes are compared through experimental data and studied respectively.
Kuan Gao - One of the best experts on this subject based on the ideXlab platform.
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Application of linear Superposition Theory in successive thermal response tests without ground temperature recovery
Science and Technology for the Built Environment, 2017Co-Authors: Shiyu Zhou, Wenzhi Cui, Kuan GaoAbstract:The thermal response test is an important way to obtain underground thermal properties for the design of a ground-source heat pump system. In practice, two successive thermal response tests with different heating powers may be conducted in the same borehole. If the waiting time between the two tests is not long enough for the ground temperature to recover to the original ground temperature, the subsequent thermal response test may be affected by the residual ground temperature field of the initial test. In this case, there is an obvious deviation between the results computed using the conventional line source method for the two thermal response tests. In the current article, a new computational method, based on linear Superposition Theory, is proposed to solve the problem encountered in the situation described. With the proposed method, the thermal conductivity is computed for four sets of thermal response tests conducted on four boreholes located in different zones, and the results demonstrate the accura...