应用力学

Secondly, modularization technique is used in the structure analysis of product. The modeling means using mainly top-down modeling and subsidiarily down-top modeling is applied, and controlling codes are programmed through applying API and VBA in SolidWorks. The product is detected by finite element technique. Finally, the rapid design system is developed for bend door of railway vehicles, and it has got an effective application in enterprises.

本系统在产品结构分析上采用模块化技术，在参数化建模中应用自上而下建模为主、自下而上建模为辅的建模手段，通过应用SolidWorks的API函数及VBA编制相应的控制程序，并通过有限元技术对设计的产品进行力学分析验证，完成了轨道车辆弯门产品的快速设计系统的开发。

In this method residual stresses were evaluated using a fracture mechanics approach,that is,the crack opening displacements measured by digital speckle correlation method at a point on the edge of a plate as a rack was introduced and extend from the edge were used to deduce the state of stresses that existed in uncracked plate.

提出一种简便的残余应力检测方法，利用数字相关技术检测裂纹扩展过程中试样表面的变形，应用断裂力学理论计算出残余应力分布。通过梁弯曲对试验结果作了验证并与应变测量结果进行了对比，残余应力的检测结果与理论值标准差为1.28MPa。对淬火和焊接残余应力分别作了检测。实际应用表明所提出检测方法具有准确、高效和使用简便的特点

Maxium valum of axial torque were measured by static eccntric loading test on the instrumented spines at last; Another 8 fresh frozen human cadaveric spinal speciments were used in this biomechanical test, the testing constructs used were:〓vertebrectomy and 〓 discectomy, bone-graft with anterior Kaneda device, mesh-cage interbody fusion device, mesh-cage with Kaneda fixation, mesh-cage with posterior pedicle screw system TSRH.

利用腰椎三维运动分析系统进行生物力学稳定性测试及静态偏心加压极限扭转载荷测试。2）取8个新鲜冷藏的人尸脊柱标本，分别行〓椎体全切，〓和〓椎间盘全切，制作损伤失稳模型，依次实施四种重建术式：髂骨块植入加前路Kaneda钢板固定，钛网椎间融合器植入，钛网和前路Kaneda联合应用，钛网和后路TSRH椎弓根系统联合应用。

The solid-liquid mixed casting of Al-Mn allays was studied by adding same alloys powder, the structure and performance of the material prepared by solid-liquid mixed casting was analyzed.

采用固液混合铸造的室温力学性能σb=130MPa，σ0.2=80MPa，δ=1.2%；优于传统铸造和半固态铸造合金，使难以应用的高锰铝合金有了应用可能。

This paper introduces the principle of instrumented impact test method and its application in production and scientific research.

介绍了仪器化冲击试验方法的基本原理及其在生产和科研中的应用，重点阐述了仪器化冲击试验方法在动态断裂力学测试技术中的开发、冲击曲线参数分析、材料断裂机理研究等领域所取得的成果，并展望了这一方法未来的应用和发展趋势。

This paper is divided into four chapters. Chapter I describes the application and development and the mechanics characteristic of the combined system of beam and Arch Bridge.

全文共分为四章，第一章介绍了梁拱组合体系桥梁的应用发展与力学特性以及国内目前相关桥型的应用现状，提出了本文所研究的内容。

The main contents are as follows: Creating finite element model of cradle carriage, top carriage and trail of the howitzer. The structural static stress analysis of are dealt with finite element program system I-DEAS. For accuracy and computation cost, the nonlinear finite element structural dynamics model of the howitzer is created with different elements such as solid elements, shell elements and beam elements.

主要包括以下几个方面工作：建立了该炮摇架、上架和下架的三维有限元静力学模型，并应用I－DEAS有限元软件进行了强度分析；顾及计算准确性和计算成本，应用实体单元、壳单元和梁单元相结合的方法建立了该炮的非线性有限元结构动力学模型。

In order to study the primary resonance and primary parametric resonance of a rectangular deck plate subject to harmonic disturbances in temperature field, by applying elastic theory, a nonlinear dynamical equation in partial differential form for the plate is established first. Then the nonlinear vibration equation in ordinary differential form is obtained based on Galerkin's method.

为了研究温度场中桥面矩形薄板受简谐激励的主共振－主参数共振问题，应用弹性力学理论建立其动力学方程，应用Galerkin方法将其转化为非线性振动方程。

Fully considered the structure and process characteristics of strip mill shape detection equipment,through plenty of field experiments and theory study,a set of error analysis model fit for strip mill shape detection equipment has been set up for the first time with combining theory of the classical mechanics and modern computer technology,which will create the right complex error compensation scheme and put it into the productive practice.

充分考虑板带轧机板形检测设备的结构与工艺特点，经过大量的现场试验与理论研究，将经典力学理论与现代计算技术有机结合，首次建立了一套适合于板带轧机板形检测设备系统误差分析模型，给出了相应的误差综合补偿方案，并将其应用到生产实践，对不同张力下检测辊的挠曲、倾斜、磨损等因素进行了综合补偿，大大降低了现场的板形封锁率，给企业取得了较大的经济效益，具有进一步推广应用的价值。

PC-DCP, which consisted of two parts, Dynamic Compression Plate and Point Contact Nut, use bi-cortical screws to fix fractures.Fracture stability was enhanced through PC NUT conical tips piercing intocortical bone beneath the plate.

本研究以传统DCP为对照，通过对PC-DCP的生物力学性能、生物学性能及动物实验应用几个方面的研究，从而为将来的临床应用提供理论和实验依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。