FAT Iterative Method Based on Dual Conical Indentation to Obtain Properties of Materials
-
摘要: 基于半锥角为60°和70.3°的圆锥形压头单调压入试验,获得载荷-压深响应曲线。根据曲线所具有的Kick定律特征,寻求有限元迭代输入应力应变关系与输出载荷位移曲线之间的数学关系,进而进行合理的迭代求解,最终获得材料的单轴弹塑性本构关系。通过对2种钛合金材料的反演应用,结果表明迭代计算得到的本构关系与经典的单轴拉伸试验结果一致。Abstract: Load-displacement curves are obtained based on the monotonous conical indentation test under half cone angle of 70.3° and 60°. The relationship between the stress-strain curves and the load-displacement curves are found according to Kick’s law of load-displacement curves. After reasonable iteration, eventually uniaxial elastoplastic constitutive relationships of materials are obtained by FE calculation. Through the reverse application of two kinds of titanium alloy, the constitutive relationships obtained by iterative calculation are consistent with the classical uniaxial tensile test results.
-
计量
- 文章访问数: 16
- HTML全文浏览量: 6
- PDF下载量: 0
- 被引次数: 0
下载:
