单面约束螺接中厚板弯曲弹塑性分析

根据薄壁结构中螺栓连接板件的支撑特点,基于Mindlin板横向剪切理论,考虑单面约束的接触作用,提出了螺接中厚板连接件承载能力的分析方法·对于两边支撑的线性硬化材料螺接板的弯曲进行了弹塑性有限元分析,以螺接区外缘应力进入塑性作为判据,给出了计算承载能力的方法,并通过试验(钛合金试件)得到了破坏载荷的实验值,验证了文中建议的分析方法的有效性·

Elasto-Plastic Bending of Bolted Moderately Thick Plates with Monoside Restraints

?Considering the contact action by monoside restraints and based on Mindlin's plate transverse shear theory and the support characteristics of bolted moderately thick plates in thin-walled structure, a method to analyze load bearing capacity of bolted moderately thick plates is proposed. The elasto-plastic bending of plates supported on two edges of linearly hardened material was studied by FEM method, of which whether the peripheral stress of bolt contacting area goes into the plastic region is taken as a criterion so as to calculate the load-bearing capacity. Experiments taking titanium alloy as specimens were conducted for determining the load bearing capacity of the bolted plates and verifying the validity of the method proposed.