力学

The difference of micropolar elasticity from classical continuum is that the former incorporates micro-rotation in its deformation formulation and couple stresses in its stresses.

本文综述了碳纳米管国内外研究现状及进展，然后在总结前人研究成果的基础上，应用适合于研究微观力学的微极性弹性理论和非局部弹性理论对碳纳米管的静力学、屈曲以及动力学性能进行了研究。

After graduation, he continued to work at the same institute, engaged in the research of shock wave propagation in solids, hyper-velocity impact and shock wave consolidation. He obtained PhD in applied mechanics from the University of Cambridge in 1998 with a thesis about constitutive relations and elastic waves for cellular solids modeled as a micropolar solid.

毕业后继续在力学所从事高温高压下固体中冲击波传播、高速冲击及爆炸冲击波压实金属粉末的机理研究。1998年获英国剑桥大学应用力学博士学位，论文研究胞状固体材料本构关系及微极材料中弹性波传播的问题。

A process which consists of a solvent casting stage, a film crush up, and a compression molding stage was used to prepare fracture innerfixation composite materials of β- TCP/PLLA.

讨论了以PLLA和β-TCP为原料以高温低压力条件下的模压成型作为成型手段，制备了β-TCP/PLLA复合骨折内固定材料，并对所得复合材料的力学性能进行了测试，对影响材料的最终力学性能的因素作了分析。

In many cases, the effect of suction in a partially saturated soil is ignored at all; very often, the soil above the ground water table is simply treated as a dry soil or as a saturated soil.

现今处理部分饱和土壤之力学模型及地工相关问题，多仅描述其排水条件下之力学行为与工程问题，甚或更仅将土壤简化为饱和土壤来分析之。

The nonlinear mechanical model of contact between soil particles was established based on the effects of liquid bridges on mechanical microstructure of soil and the basic Distinct Element Method theory. The dynamic behaviors of dry soil ahead of the bulldozing plate with different cutting angles were simulated by DEM.

根据液桥对土壤微观力学结构的影响，在传统离散单元法理论的基础上，建立了土壤颗粒接触非线性力学模型，并对不同切土角推土板前端干土壤的动态行为进行了离散元模拟。

Mechanical properties of homopolymerized and copolymerized polypropylenes were compared and effect of ultraviolet radiation on their mechanical properties, infrared spectrum and X-ray diffraction was studied.

对比了均聚级和共聚级聚丙烯的力学性能以及紫外辐照对其力学性能、红外光谱和X射线衍射的不同影响。

The mechanical strength of cortical bone decreased but the fragility increased after defatting.

脱脂后皮质骨的力学强度下降，脆性增加。关键词：皮质骨；生物力学；脱脂

Applied overlay principle discloses intention at the complex load of break of grease wall of a well for individual and simple load, through set and time relevant aeriform pressure distributings function, rupture according to flexibility of stretch and mechanical, line condition of tie of stress of the upland after perforation of well of grease of mechanical and academic derivation plays factor of intensity of interstitial and most advanced stress, got deflagrating patulous condition is cracked since terrane of aeriform fracture wall of a well, the aeriform pressure gradient that this condition can follow time change inside reflective break is right the influence of interstitial configuration.

应用叠加原理将功能于油水井壁裂缝的复杂载荷分解为单个简单载荷，通过设定和时间相关的气体压力分布函数，根据弹性力学、线弹性断裂力学理论推导油水井射孔后高地应力约束条件下裂缝尖端应力强度因子，得到了爆燃气体压裂井壁岩层起裂扩展条件，该条件可以反映裂缝内随时间变化的气体压力梯度对裂缝形态的影响。

This study deals with many branches of modern mechanics, such as structural dynamics, damage mechanics as well as coupling of multi-media and multi-fields. Therefore, the research on structural dynamic properties and underwater acoustic properties of intact and delaminated composite plate structures is not only of great theoretical importance but also of practical value.

舰艇声纳导流罩的动力特性和声特性结构上涉及到复合材料结构动力学、损伤力学以及多介质、多场耦合力系等近代力学分支，因此，健康和分层损伤复合材料层合板结构动力特性和水中声学特性研究的课题，既有重要的理论研究的意义，也具有实际工程价值。

Preliminary study on mechanical properties of soil was done by PFC3D numerical simulation through endowing appropriate micro-properties.

通过大量的颗粒流数值试验，从细观力学角度对砂土的工程力学特性进行了初步的模拟研究。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。