基于ANSYS的PVC芯材剪切性能仿真分析与应用研究

SIMULATION ANALYSIS AND APPLICATION RESEARCH ON SHEAR PERFORMANCE OF PVC CORE MATERIAL BASED ON ANSYS

根据当前复合材料用芯材的通用表面处理方式,基于ANSYS建立的芯材仿真模型,预测其面外剪切模量,使用复合材料力学的经典薄片模型理论计算结果与之校核,两者吻合良好。利用仿真模型的计算结果进一步讨论芯材表面处理的不同因素水平对芯材剪切模量的影响,结果表明选用孔径为2 mm,深槽宽度为1.2 mm,深槽留底高度为2 mm和浅槽高度为3 mm时,芯材具有较高的剪切模量,将试验结果与之对比发现,两者误差为1.74%,在可接受范围内;实现了"理论模拟,试验校核"的设计理念,高效、节时、省力。同时,将模拟结果与王耀先半经验公式对比发现,当P=2.047时,两者误差不超过0.97%,吻合度较好;可使用该经验公式预测简单形式的芯材剪切模量。

According to the current general surface treatment method of composite core materials,the core material simulation model based on ANSYS is used to predict its out of plane shear modulus,and the theoretical calculation results of the classical sheet model of composite material mechanics are checked with it,and the two results coincide with each other.Based on the results of the simulation model,the influence of different factors on the shear modulus of the core material is further discussed.The results show that the core material has higher shear modulus when the hole diameter is 2 mm,the width of the deep groove is 1.2 mm,the height of the deep groove bottom is 2 mm and the height of the shallow groove is 3 mm.The test results show that the error value between the two is 1.74%,which is within the acceptable range.The design concept of"simulation first,then verification though experiment"is efficient,time-saving and labor-saving.At the same time,comparing the simulation results with Wang Yaoxian′s semi-empirical formula,it is found that when p=2.047,the error value between the two is no more than 0.97%,and the coincidence is good.The empirical formula can be used to predict the simple form of core shear modulus.