Though this approach is reasonable and robust for that specific design , however , it is time consuming , costly and needs to be repeated for designs when structural component has different stacking sequences or subject to different fatigue loading 层压板的疲劳损伤包括纤维断裂、基体破坏和分层等破坏形式，这些形式的破坏可能同时发生，相互影响，表现出十分复杂的疲劳损伤机理。
Crack development and failure modes , longitudinal reinforcement strain distributions and load - deflection curves were compared as a result in order to evaluate the validity of the disturbed stress field model to analyse such deep simply supported beam 通过与试验结果的对比，在开裂形态、破坏形式、纵筋应变分布及荷载位移曲线等局部与整体反应层次上，评价了扰动应力场模型模拟深受弯简支梁受力性能的适用性。
At first , the category , breaking forms and the function and characteristics of the deep excavations are introduced , and a series of problems is analyzed . the status quo that the genetic algorithms applies to the structural optimization is analyzed in detail 本文首先介绍了深基坑支护的种类、破坏形式以及支护的功能和特点，分析了深基坑支护存在的一些问题，详细分析了遗传算法在结构优化设计的应用现状。
Analysis which was based on the fracture mode of mould in wire - cutting processing , and the results show that the partial - quenched of mould , the non - uniformity of blank temperature and the carbide segregation inside the material are the main reasons of deformation and cracking 摘要通过分析在线切割加工中模具的破坏形式表明：模具不完全淬火、坯料温度的不均匀分布、材料内部的碳化物偏析是模具变形与开裂的主要原因。
It can be observed from experiment that the final whole deformations of the tubes take on the shapes of " v " , and " w " in certain condition . the local dents of the tubes are obvious . the critical velocities and plugging modes of penetrations can be obtained 从实验中可以观察到：管的整体残余变形为“ v ”形，在一定条件下，还可能为“ w ”形；有明显的局部凹陷，可以得到穿透时的临界速度，其穿透破坏形式为冲塞型。
Firstly , the main deformation and destruction forms of high loess slope and its deformation and destruction mode are brought forward . the forms are : collapse , slumping , slope wash , slope peeling , sliding mass deformation by collapsibility , and a very little seen form : mudflow 根据野外调查和前人的研究资料，概括总结出黄土高边坡有如下几种破坏形式：滑塌、崩塌、坡面冲刷、坡面剥落掉块、坡体湿陷变形以及并不多见的泥流。
Besides , with stated heightand brendth ratio , acted on by horizontal and vertical load , the ultimate loads of wall failed in bending - shear is similar to one failed in shear . the walls crack form is indefinite . we ca n ' t define consolidate menthod only by the crack from 另外，一定高宽比的砖墙在竖向与水平荷载联合作用下，当弯剪破坏与剪切破坏的极限荷载比较接近时，其破坏形式具有不定性不能简单地以裂缝形式确定加固方案。
The target will not come true , even with good line or efficient traction , if the problems of brake are act solved well currently , we are usually puzzled by wheel flat , disc crack in brake system , which influence the quality of running badly 制动问题如果没有解决，即使有了高质量的线路，有了功率很大的牵引动力等，高速或者重载还是不可能实现的。目前我国运行列车制动装置的破坏形式主要是踏面擦伤和制动盘裂纹，严重影响了运行质量。
The main destruction model of steel crane structures in service is summarized , the destruction reason is analyzed , and the main procedure of fatigue safe control on steel crane structures in service is established based on many engineering investigation and formerly engineering appraisal instance 1 、在大量工程调查及以往工程鉴定实例基础上，总结出在役钢结构吊车梁系统的主要破坏形式，分析其破坏原因，建立在役钢结构吊车梁疲劳安全控制的基本步骤。
The methods are put forward to check the anti - seepage stability , anti - heave stability and overall stability of the composite soil nailed wall , in which the mistakes of shearing force balance method now used in anti - heave stability is pointed out and corrected 归纳并研究了复合土钉墙的破坏形式，对复合土钉墙的抗渗流稳定性、抗隆起稳定性和整体稳定性进行了验算。对抗隆起稳定性验算中的剪力平衡法，指出了现行计算方法中的错误，推导出了正确的计算公式。
