3D Lattice Fracture Model: Theory and Computer Implementation
3D Lattice Fracture Model: Theory and Computer Implementation
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DOI：
10.4028/www.scientific.net/kem.452-453.69
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发表时间：
2010-11
期刊：
影响因子：
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通讯作者：
Z. Qian;E. Schlangen;G. Ye;K. van Breugel
中科院分区：
文献类型：
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作者：
Z. Qian;E. Schlangen;G. Ye;K. van Breugel
本文提出了晶格断裂模型，用来模拟多相材料的断裂过程，得到载荷-位移图和裂纹扩展的力学行为。点阵断裂分析的基本步骤是在点阵结构上施加规定的位移，找到应力强度比最高的临界点阵单元，然后将其从体系中移除，重复进行，直到体系整体失效。计算机实现三维晶格断裂模型的挑战之一是对计算机内存的巨大需求。采用无矩阵技术解决了这一问题。
The lattice fracture model is presented in this paper, which is intended to simulate the fracture processes in multiphase materials to obtain the mechanical behavior in terms of load-displacement diagram and the cracks propagation. The basic procedures of lattice fracture analysis is that imposing a prescribed displacement on a lattice structure, finding the critical lattice element with the highest stress/strength ratio, removing it from the system and repeating until the system fails globally. One of the challenges in computer implementation of 3D lattice fracture model is the huge demand for computer memory. Matrix free technique is adopted to solve this problem.