Damage analysis of aluminum alloy gusset joints under cyclic loading based on continuum damage mechanics

2021 ◽  
Vol 244 ◽  
pp. 112729
Author(s):  
Hongbo Liu ◽  
Bohan Li ◽  
Zhihua Chen ◽  
Yuanwen Ouyang
Keyword(s):  
Aluminum Alloy ◽  
Cyclic Loading ◽  
Damage Mechanics ◽  
Continuum Damage Mechanics ◽  
Damage Analysis ◽  
Continuum Damage

Micromechanical Continuum Damage Analysis of Plain Woven Composites

2015 ◽  
Vol 06 (03) ◽  
pp. 1550009 ◽  
Author(s):  
L. Li ◽  
F. Aliabadi ◽  
P. H. Wen
Keyword(s):  
Galerkin Method ◽  
Radial Basis Function ◽  
Basis Function ◽  
Damage Mechanics ◽  
Continuum Damage Mechanics ◽  
Woven Composites ◽  
Moving Least Squares ◽  
Damage Analysis ◽  
Continuum Damage ◽  
Shape Functions

Application of meshfree Galerkin method to homogenization and Continuum Damage Mechanics (CDM) analysis of plain woven composites is presented. Three types of meshfree formulations are developed and include: radial basis function, moving least squares and moving Kriging. Three benchmark examples are used to demonstrated the efficiency of the meshfree formulation as well as compare the performance of the three shape functions. Non-linear stress–strain relationhip of unit cellusing the three shape functions are assessed with two benchmark examples of CDM model.

scholarly journals Textile Composite Damage Analysis Taking into Account the Forming Process

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5337
Author(s):  
Marjorie Jauffret ◽  
Aldo Cocchi ◽  
Naim Naouar ◽  
Christian Hochard ◽  
Philippe Boisse
Keyword(s):  
Damage Mechanics ◽  
Continuum Damage Mechanics ◽  
Woven Fabric ◽  
Damage Analysis ◽  
Continuum Damage ◽  
Woven Composite ◽  
Textile Composite ◽  
Forming Process ◽  
Composite Damage ◽  
Bias Extension

The internal structure of composite materials is modified during manufacturing. The formation of woven prepregs or dry preforms changes the angle between the warp and weft yarns. The damage behaviour of the consolidated composite is modified by these changes of angle. It is important when designing a composite part to consider this modification when calculating the damage in order to achieve a correct dimensioning. In this paper, a damage calculation approach of the consolidated textile composite that takes into account the change in orientation of the yarns due to forming is proposed. The angles after forming are determined by a simulation of the draping based on a hypoelastic behaviour of the woven fabric reinforcement. Two orthogonal frames based on the warp and weft directions of the textile reinforcement are used for the objective integration of stresses. Damage analysis of the cured woven composite with non-perpendicular warp and weft directions is achieved by replacing it with two equivalent Unidirectional (UD) plies representing the yarn directions. For each ply, a model based on Continuum Damage Mechanics (CDM) describes the progressive damage. Two examples are presented, a bias extension specimen and the hemispherical forming coupon. In both cases, the angles between the warp and weft yarns are changed. It is shown that the damage calculated by taking into account these angle changes is greatly modified.

Sign in / Sign up

Export Citation Format

Share Document