摘要
论文分析了大挠度情况下固支夹芯圆板在准静态中心荷载作用下的承载能力.提出了考虑芯层强度影响的夹芯结构屈服条件,应用该条件,并基于边界条件和平板的初始变形机制假设夹芯板的速度场,推导了夹芯圆板考虑弯曲和膜力联合作用的大挠度响应,并应用数值算例验证了分析模型的合理性,在此基础上,分析和讨论了面板厚度、芯层厚度和芯层强度对夹芯圆板承载能力的影响.
This paper is concerned with the load-carrying capacity of circular sandwich panels subjected to central quasi-static loading.The panel consists of two metallic face-sheets and a core made from metallic foam,and is fully clamped at the edges.The analysis is based on a newly developed yield criterion for the sandwich cross section.The large deflection response is estimated by assuming a velocity field,which is defined according to the initial deformation mode of flat panel and the boundary condition.A finite element simulation has been performed to validate the analytical solution.A parametric study is then carried out to examine the structural response.Good agreement confirms that the quasi-static behavior of circular sandwich plates is well captured by the analytical model.
出处
《固体力学学报》
CAS
CSCD
北大核心
2010年第4期346-352,共7页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金项目(10572100
90716005
10802055)
山西省自然科学基金项目(2007021005)资助
关键词
夹芯圆板
大挠度
泡沫金属
屈服准则
circular sandwich panel
large deflection
metal foam
yield criterion
