Investigation on Linear Elastic Finite Element Model of an Open-hole Laminate
Composite laminates are valuable for light-weight design of vehicles.Due to the requirement of joint and space avoidance,open-hole laminates are generally employed in engineering.Meanwhile,a linear-elastic model with relatively large mesh size for a composite laminate is generally used,considering the massive computational cost of car body full-scale FEM analysis.Therefore,it is desirable to establish an effective analysis method for open-hole composite laminate,under the condition of linear elastic model.With the linear elastic assumption,this work predicted the mechanical properties of an open-hole laminate under uniaxial tensile load,based on the experimental mechanical properties of the unidirectional composite.The influence of mesh size on the prediction ability of FEM are investigated.It is found that the model with 1 mm mesh size gives the best prediction results for a quasi-isotropic laminate with a 6 mm open-hole.When the mesh size is set as 10 mm,the input data of the unidirectional composite have to be re-calibrated.
万方数据
维普
