The Experts below are selected from a list of 4881 Experts worldwide ranked by ideXlab platform

Zlatan Kapidžic - One of the best experts on this subject based on the ideXlab platform.

Hans Ansell - One of the best experts on this subject based on the ideXlab platform.

C T Mccarthy - One of the best experts on this subject based on the ideXlab platform.

  • a global Bolted Joint model for finite element analysis of load distributions in multi bolt composite Joints
    Composites Part B-engineering, 2010
    Co-Authors: P J Gray, C T Mccarthy
    Abstract:

    Abstract This paper presents the development and validation of a global Bolted Joint model (GBJM), a highly efficient modelling strategy for Bolted composite Joints. Shell elements are used to model the composite laminates and the bolt is represented by a combination of beam elements coupled to rigid contact surfaces. The GBJM can capture effects such as bolt–hole clearance, bolt-torque, friction between laminates, secondary and tertiary bending in the laminates as well as the load distribution in multi-bolt Joints. The GBJM is validated using both three-dimensional finite element models and experiments on both single- and multi-bolt Joints. The GBJM was found to be robust, accurate and highly efficient, with time savings of up to 97% realised over full three-dimensional finite element models.

Jyityan Yeh - One of the best experts on this subject based on the ideXlab platform.

  • three dimensional contact stress analysis of a composite laminate with Bolted Joint
    Composite Structures, 1995
    Co-Authors: Wenhwa Chen, Shyhshiaw Lee, Jyityan Yeh
    Abstract:

    Based on an incremental restricted variational principle formulated and the transformation matrix derived from three-dimensional contact kinematic conditions, a general but effective finite element technique satisfying various contact conditions is established for the three-dimensional contact stress analysis of a composite laminate with Bolted Joint. The double-lap Bolted Joint in the thin graphite/epoxy laminate of [450/–4590]s lay-up or in the thick glass-reinforced polyester laminate of various stacking sequences subjected to a bolt load and/or a clamping torque is considered in the analysis. The effects of friction, clearance, bolt elasticity, stacking sequence and clamp-up on the contact tractions around the Bolted Joint are studied systematically. The distribution of contact tractions through the thickness of the bolt-laminate interface is also shown. The delamination onset of the composite laminate can thus be evaluated accordingly. Several examples are carried out to demonstrate the applicability of the technique developed. Good agreement between the present computed results and the referenced experimental results is noted. The present work would be of help for the design of a composite laminate with Bolted Joint.

Daining Fang - One of the best experts on this subject based on the ideXlab platform.

  • a novel predictive model for mechanical behavior of single lap gfrp composite Bolted Joint under static and dynamic loading
    Composites Part B-engineering, 2015
    Co-Authors: Panding Wang, Haosen Chen, Xiaolei Zhu, Qilin Zhao, Daining Fang
    Abstract:

    Abstract Mechanical connection of composite is critical due to its complicated meso-structure and failure mode, which has become a bottleneck on reliability of composite material and structure. Although many researches on composite Bolted Joints have been carried out, the theory and experiment on mechanical behavior of such a Joint structure under dynamic loading were rarely reported. Here, we propose a novel predictive model for quasi-static and dynamic stiffness of composite Bolted Joint by introducing the strain rate dependent elastic modulus into the mass spring model. Combined with the composite laminate theory and Tsai-Hill theory, the present model was capable of predicting the strain rate dependent stiffness and strength of the composite Bolted Joint. Quasi-static and impact loading experiments were carried out by Zwick universal hydraulic testing machine and split Hopkinson tension bar, respectively. The stiffness and strength predicted by our model showed good accordance with the experiment data with errors below 12% under quasi-static loading and below 30% under impact loading. The results indicated that under impact loading, stiffness and strength of the composite Bolted Joint were significantly higher than their quasi-static counterparts, while the failure mode of the Joint structure trended towards localization which was mainly bearing failure. Among various lay-up ratios studied, the optimal lay-up ratio for quasi-static and dynamic stiffness was 0:±45:90 = 3:1:1.