无弹性的

Based on linear bending theory of thin elastic plate and fundamental solution constructed with the general solution principle of biharmonic equation, a meshless method was developed for establishing a computational format of numerical solution of thin plate bending.

基于弹性薄板的线性弯曲理论和重调和方程的一般解理论构造的基本解，建立无网格法求解薄板弯曲问题的数值计算格式。

In this paper,the boundary singular kernel method in Reproducing Kernel Paicle Method has been applied to impose the essential boundary conditions in EFGM by revising the MLS shape function.The stress field and the displacement field are analysed by linear elastic theory.The contour integral method is used to calculate the J-integral,then the stress intensity factors of mixed-mode crack is acquired.The correctness and the validity of the method are validated.

本文将再生核质点方法中的边界奇异权方法引入EFGM中，通过对MLS形函数进行修正实现了本质边界条件在节点处的精确施加；运用线弹性断裂理论分析裂纹板的应力应变场，采用围线积分法计算J积分，给出了复合型裂纹板的应力强度因子的无网格伽辽金方法。

Hypoplastic constitutive theory, which was originated from the middle and late stage of the 20th century, is a new type of soil constitutive theory based on rational mechanics. Hypoplastic theory can reflect inelasticity, nonlinearity, dilatancy and other main mechanical properties of granular material.

亚塑性本构理论是20世纪中晚期发展起来的一类基于有理力学的新型的连续介质本构建模理论，主要用于刻画无黏性散粒型上体的非弹性、非线性及剪胀性等主要应力应变特性。

This rubber is isobutylene of pvp-k, complete saturated rubber, So has the extremely good physical and chemical properties, for example have good ozone-resisting aging resistance, oxygen ageing resistance, light ageing resistance, climate aging resistance, the chemical stability and excellent air tightness and water resistance, excellent elasticity and energy absorption performance.

该橡胶是异丁烯的均聚物，无双键，为完全饱和橡胶，所以具有极好物理和化学性能，如，良好的耐臭氧老化性、耐氧老化性、耐气候老化性、较好的化学稳定性、优异的气密性和耐水性，极好的弹性和能量吸收性能。

From the point of practice, the massless foundation model is applied for problem of the dam--foundation interaction. The regularity of the natural frequencies of the dam varying with the boundary size of the foundation is studied under various foundation conditions, and then the rational foundation size is decided.

从实用的角度出发，利用无质量弹性地基模型分析坝—地基相互作用问题，研究了不同地基情况下重力坝自振频率随地基边界范围变化的规律，确定了合理的地基边界范围，并分析了相互作用对坝体振型的影响。

In recent years, due to industrial structure changing rapidly, enterprises face the situation that the industry has been relatively mature and even recessional, they invariably deliberate on how to reduce cost and adjust enterprise constitution.

近由於产业结构迅速变化，企业在面产业日趋成熟、甚至衰退的况下，无亟思如何低成本、调整企业体质，因此产业型态与雇用模式亦出现有别於以往的变化，组织规模渐趋向精简与扁平化、专营於某块专业基的顾问业纷纷崛起，加上求职者工作价值观的改变，终身雇用制之式微等等现象，许多企业纷纷采行各种措施，如组织再造、缩减规模与劳动弹性化等，期望能专注於本身专长的核心优势，并将非本身专长的工作以外包的方式来降低成本。

The subject of this study is mainly to investigate the effect of improving the property of common asphaltic mixture when an appropriate amount of waste rubber powders are added on resisting low temperature cracking with the split cylinder test, the little beam bending test, the bhringkage test and unconfined compressive stress test of laboratory-compacted specimens.

本研究主要应用劈裂试验，小梁弯曲试验，收缩试验和无侧限抗压试验考察了在普通沥青混合料中掺适量废胶粉后对低温抗裂性能的改善效果。试验结果表明：掺3—5％的废胶粉，可以降低沥青混凝土的低温弹性模最和增大其变形均达1—3倍，玻璃化转变温度也比普通沥青乱凝土的低10℃以上。

In tested frequency range, the damping ratio keeps constant under different vibration frequency, which is verified again that the concrete is not the ideal sticky elastic material whose dissipation characteristic is correlative with frequency.

在实验的频率范围内，不同振动频率下的阻尼比近似保持常数，再次证实混凝土并非耗能特性与频率相关的粘弹性材料；砼构件的动刚度随振动频率变化不大，表明其力学参数无明显频变特征。

Based on the agility property of node disposal in meshless method, the theory can be used in the bending problem of foundation plate with arbitrary plane shape.

该理论同时适用于弹性地基上薄、中厚、厚板的计算，基于无网格法节点布置灵活的特性，可推广应用于任意平面形状的地基板的求解。

Moreover the vibration frequencies of the plate are computed using iterative method,which begins with the in vacuo eigenfrequency and continues nutil in-water eigenfrequency converges.

至于弹性薄板在水中的振动问题，Helisse[6 ] 回顾了研究历史，他用一组特定的三角函数作为基函数采用瑞利-里兹方法求解了有、无障板条件下矩形板在水中的

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。