1) dynamic energy release rate
动能量释放率
2) dynamic energy release rate
动态能量释放率
1.
Under impact load,dynamic energy release rates of the running crack tip of a three-point-bend beam with initial crack are studied by means of dynamic caustics.
借助高速摄影捕捉裂纹瞬态扩展过程，利用动态焦散线研究了含有裂纹的三点弯曲梁在冲击载荷作用下扩展裂纹尖端的动态能量释放率分布规律；综合分析了裂纹扩展时间、长度、速度，以及扩展裂纹尖端动态应力强度因子与它的变化关系，表明了动态能量释放率在裂纹扩展过程中的驱动作用。
2.
The varieties of dynamic stress intensity factor,crack extensions rate,crack extensions acceleration,and dynamic energy release rate in the crack tip of media containing flaw which is collinear with the borehole are studied.
采用透射式焦散线测试系统,进行爆炸应力波作用下缺陷介质裂纹扩展试验,研究了含与炮孔共线的预制裂隙介质裂纹扩展速度、加速度、裂纹尖端动态应力强度因子和动态能量释放率的变化规律以及它们之间的变化关系。
3) energy release rate
能量释放率
1.
Analysis of energy release rate for delaminated composite plates after repair;
含层间分层复合材料层合板修复后能量释放率分析
2.
Simulation analysis on interfacial crack energy release rates in two materials structure and comparison with those in the single material;
两种材料中界面裂纹能量释放率的仿真研究及与单一材料裂纹比较
3.
FEM was improved with an effective virtual crack closure technique to evaluate the energy release rate as the criterion for crack propagation.
通过Newmark方法求解动力学方程,以能量释放率作为裂纹扩展准则。
4) energy releasing rate
能量释放率
1.
Based on the principle of energy superposition and by using the equivalent transformation for beam sections, an expression for calculating the energy releasing rate of interface crack growth in a sandwich beam specimen is developed, and the toughness for the interface of Si 3N 4/Al formed by vacuum diffusion method is measured by a particularly designed four point bending test system.
基于能量叠加和梁的等效截面转换原理，本文导出了计算Ｓａｎｄｗｉｃｈ梁试样界面裂纹扩展能量释放率的解析式，并利用专门设计的四点弯曲实验系统测得了Ｓｉ３Ｎ４／Ａｌ真空扩散连接界面的韧性，进而为优化陶瓷／金属连接工艺、筛选材料组配和评价其连接界面的抗断裂性能提供了必要的研究方法和实验手段。
2.
Finally,the structural fatigue cracking propagation is computed based on the Paris equation with regard to energy releasing rates.
根据Jonswap谱确定随机波浪功率谱,进而由同一功率谱使用Shinozuka方法计算生成10个随机波浪力谱,应用雨流计数法对波浪力谱进行循环计数处理,最后使用基于能量释放率的Paris公式方法对构件进行疲劳裂纹扩展计算。
5) strain energy release rate
能量释放率
1.
Based on the theory of strain energy release rate of fracture mechanics, the crack problem of mixed mode Ⅰ and mode Ⅱ crack for functionally gradient materials under plane strain is investigated.
基于断裂力学的能量释放率理论 ,研究了平面应变条件下梯度功能材料的Ⅰ ,Ⅱ型复合裂纹问题 。
2.
The strain energy release rate is studied along the delamination front.
在分析中引入接触元来防止层间的闭合接触效应,并进一步分析了分层前缘的能量释放率。
3.
As an example of axisymmetric elasticity problem, the analytic solutions of elastic field of cubic quasicrystal with a penny-shaped crack are obtained, and the stress intensity factor and strain energy release rate are determined.
作为轴对称问题的例子，得到了立方准晶含有圆盘状裂纹时其弹性场的分析解，并由此确定了应力强度因子和能量释放率。
6) energy release rates
能量释放率
1.
Study of energy release rates for crack deflection of ceramic matrix composites;
陶瓷基复合材料基体裂纹偏转能量释放率研究
2.
A failure criterion has been developed for mixed mode fracture based on the theories of energy release rates and has been used to analyze laminated failure of mixed mode cracks in composite materials.
将复合材料的混合裂纹看成为Ⅰ型裂纹和Ⅱ型裂纹的叠加,根据断裂力学中能量释放率的观点建立了混合裂纹的断裂准则,并用以分析复合材料混合裂纹的分层破坏现象。
补充资料：动能
| 动能 kinetic energy 物体因机械运动而具有的能量。它是恒为正值的标量 。物体的动量和角动量只能转换为其他物体的动量和角动量，因此是平动和转动的力学量度；而物体的动能还可转变为势能、内能、电能等其他形式的能量，因此动能可称为物体机械运动的一般量度。孤立系统的动量是不生不灭的，而其动能既可以从其他能量转变而来，也可以转变为其他能量而去，因此是可生可灭的。物体的动能可用以作功，如压缩簧等，也可将动能定义为物体因机械运动而具有的作功本领。物体因平动而具有的动能是它质量m和它的速度v的二次方的乘积的一关，即  。物理学史上曾把动能的2倍即mv2称为活力，莱布尼兹学派把它视为机械运动的唯一量度，而和坚持动量为唯一量度的笛卡尔学派剧烈争论，延续60年之久。最后由J.L.R达朗贝尔作了结论，他认为两个量度都成立：从运动物体压缩弹簧的距度来看帽和速度的平方成正比；而从压缩的时间来看，则和速度成正比。对于速度接近光速的粒子，根据狭义相对论，其动能表达式应为 ，式中m0为静止质量，c为光速，当v<<c时，展开此式，仍得 ，可见此式是更普遍的动能表达式。物体因转动也具有动能。动能单位和功相同，在国际单位制中都是焦耳。 |
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参考词条