应用力学

The state of the art of concrete filled square steel tubes is presented generally,and their mechanical behaviors under short term,long term and cycle loading are introduced briefly,as well as main worldwide design codes of concrete filled square steel tubular members.

综合国内外的相关资料，介绍了方钢管混凝土发展及其应用概况，主要包括一次加载、长期加载及动力加载作用下的力学性能研究与主要成果，以及国内外目前比较典型的关于方钢管混凝土的设计规范。

Based on the literature review, this paper analyzes and investigates the development and status of digital image processing techniques in quantitative analysis and associated numerical simulation of the geomaterials. It includes quantitative analysis of particle shapes, quantitative analysis of internal structures of soil, rock, asphalt concretes and cement concrete, quantitative analysis of macro-structures of rock mass in the ground, and numerical modeling and simulation of geomaterials by taking into account their actual internal structures, Based on the review results, the paper discusses the development history and future trend of the utilization of the digital images and associated techniques in soil and rock.

本文在研究相关文献的基础上，分析和研究了数字图像技术在土、岩及混凝土内部结构定量分析和力学数值计算中的发展过程和研究成果，内容包括：单个骨料颗粒形态特征定量分析；土、岩和混凝土内部结构定量分析；岩体结构定量分析中的应用；基于数字图像处理的土、岩和混凝土细观结构力学计算。

Based on the theory of plasticity and the concept of equal-strength design, the general formulas for calculating the plastic limit speed and stresses in the roll body and the axle sleeve are derived.

应用塑性力学方法分析铸钢辊的塑性极限状态，根据等强度设计思想，导出了塑性极限车速的计算公式，建立了塑性极限状态时辊筒与闷头中应力分量的一般公式，进而提出了铸钢辊结构承载潜力评定的方法。

OBJECTIVE: To observe the compressive strength and injectability of silk fibroin compound calcium phosphate bone cement, to evaluate the effect of silk fibroin on calcium phosphate, and to investigate the feasibility of applying silk fibroin as an injectable bone substitute to repair bone defects.

背景：高分子材料对磷酸钙骨水泥力学性能的增强作用已得到了一定的证实，但往往会同时减弱复合材料的注射性能，影响复合材料的临床应用。

Properties of potassium titanate whiskers and calcium sulphate whiskers modified epoxy resin were investigated.

应用硅烷及钛酸酯等偶联剂对钛酸钾晶须及硫酸钙晶须进行表面处理，考察晶须对环氧树脂力学性能、工艺性等的影响。

Properties of potassium titanate whiskers and calcium sulphate whiskers modified epoxy resin were investigated.

中文文摘］应用硅烷及钛酸酯等偶联剂对钛酸钾晶须及硫酸钙晶须进行表面处理，考察晶须对环氧树脂力学性能、工艺性等的影响。

Analysis was made on the fracture of pipe fittings and screw cap which connected water meter by the flaw theory and metal mechanics after stress accounting and microstructure analysis of the broken position.

通过对断裂位置的应力计算及断裂位置的微观组织分析，应用裂纹理论及材料力学相关方法，对自来水表管接头及螺母断裂进行了分析研究。

A simplified mechanical model of a typical axially loaded sleeved compression member is introduced. Some reasonable constitutive relation curves of the inner steel tube are chosen for analyzing in two numerical examples. One is analysis on its axially loaded bearing capacity under different working conditions. The other is stability analysis of grid structure with SCM. The buckling control effect of the inner steel tube is evaluated with the outer steel tube applied in these conditions.

阐述了轴心受压情况下典型套管构件的简化力学模型，选择利用合理的套管构件内核本构关系，用2个算例（内核圆钢管不同工况下的轴压承载力分析和网架结构应用套管构件的稳定计算分析）分析了外钢管对轴心受压内钢管的失稳控制效果。

In order to research threshing seed-corn identity and damage mechanism, improve threshing principle, reduce damage and enhance efficiency, the threshing experiments for Longdi-401 seed-corn were carried out by using the LDS microcomputer control and electron draw press test machine, to investigate the effects of variety , moisture condition, force position and restriction property.

摘 要：为深入研究种子玉米脱粒特性和脱粒损伤机理，改进玉米脱粒机，降低脱粒损伤，提高脱粒效率，以隆迪401玉米种子为对象，应用LDS微机控制电子拉压试验机等进行了脱粒试验，研究了玉米种子品种、含水率、作用部位及不同约束性质下的种子玉米脱粒力学特性。

The quantities of ATP generated during the main part of the retting process of kenaf fibers by using both aerobes and anaerobes are calculated by applying bioenergetic principle.

本文首先应用生物能力学原理，从理论上计算了红麻胶质在好氧微生物脱胶和厌氧微生物脱胶两种条件下产生的ATP数量。

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。