An energy method for determining fracture toughness of fibrous composite laminates was based on the theory of elastic energy release rate and crack-growth resistance in this paper.
应用线弹性断裂力学的弹性能释放率及裂纹扩展阻力等基本概念和理论，建立起确定纤维增强高分子聚合物复合材料断裂韧性的能量方法。
A 2-d finite element model of tire-rubber was established to simulate the crack growth of the sample under simple tension, by using the strain energy density parameter.
建立了二维轮胎橡胶材料的有限元模型，用应变能密度这个参数模拟了试样承受单向拉伸时裂纹的扩展方向。
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