An exact expression of energy release rate for geometrical nonlinear elastic fracture mechanics is obtained for an infinite plate with central crack under uniform stress normal to crack surfaces.
对含中心裂纹的无限大板在裂纹表面受均匀分布压力作用的情况，导出了几何非线性弹性断裂力学的能量释放率的一个精确表达式。
The energy release rate for crack propagation depends only on the stress intensity factor and the material constants.
电导通裂纹模型中的静电场对裂纹尖端扩展的能量释放率不作贡献。
The results show that the stress intensity factor is independent of material constants, and the strain energy release rate is dependent on all material constants.
结果表明，应力强度因子与材料常数无关，而应变能释放率依赖于所有的材料常数。
And then, substituting stress and displacement into basic formula of strain energy release rate, computing formula for strain energy release rate of mode III, mixed mode crack tips are direved.
其次将应力与位移代入应变能释放率的基本公式，推出了Ⅰ、Ⅱ混合型，Ⅲ型以及Ⅰ、Ⅱ、Ⅲ混合型裂纹尖端应变能释放率的具体计算公式。
The results of stress testing showed that the sustained-release tablets are stable under illumination, high temperature and high moisture (the release rate increased).
由试验结果表明，齐墩果酸缓释片各项指标均较理想，且体外释放具有良好的缓释性能。
The results of stress testing showed that the sustained-release tablets are stable under illumination, high temperature and high moisture (the release rate increased).
由试验结果表明，齐墩果酸缓释片各项指标均较理想，且体外释放具有良好的缓释性能。
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