多层金字塔夹芯结构在冲击载荷作用下的动态响应  

Dynamic response of multilayer pyramid core sandwich structure under impulsive load

作　　者：王媛欣[1] 张振华[1] 钱海峰[1] 

机构地区：[1]海军工程大学舰船工程系,武汉430033

出　　处：《计算机辅助工程》2013年第A01期373-378,共6页Computer Aided Engineering

基　　金：国家重点基础研究发展计划("九七三"计划)(613157030201);海军工程大学自然科学基金(HGDQNEQJJ12011)

摘　　要：金属材料点阵夹芯结构能量吸收效率较高,为得到多层金字塔点阵夹芯结构在冲击载荷作用下的动态响应,利用Patran建立多层金字塔点阵夹芯结构在冲击载荷作用下的数值模拟模型,通过Dytran计算分析质量为25 kg的钢板以30 m/s,60 m/s和90 m/s的速度冲击时模型的应力、应变、变形以及变形能,研究随着冲量的增加,模型的应力、应变、变形和变形能的变化规律.Metal sandwich panel is effective for energy absorbing. To researching the dynamic response of a multilayer pyramid core sandwich structure under impulsive load, a dynamic finite element analysis is done. The simulation model of the structure under impulsive load is built with Patran software. By assuming that the structure is impacted by a steel plate weighing 25 kg and its velocity are 30m/s, 60m/ s and 90m/s, the deformations, stresses, strains and deformation energies are computed respectively using Dytran. The change regulation of the model deformations, stresses, strains and deformation energies along with the variation of the momentum transferred to the front face are studied.

关 键 词：金字塔芯体 数值模拟 多层夹芯板 冲击载荷 

分 类 号：TB302[一般工业技术—材料科学与工程]