本文应用可积的一类线性微分方程求出了非均质变截面弹性直杆振动问题的一个精确解，我们应用这一精确解验证了渐近解的精确度。
This paper gives an exact solution for free vibration of a physically nonuniform straight bar with varying section by the use of a class of integrable linear ordinary differential equation.
详细讨论、分析了涉及灾害性天气预报的理论模式的稳定性，这些模式包括：非静力完全弹性方程组、滞弹性方程组。
Stability related to theoretical model for catastrophic weather prediction that includes non-hydrostatic perfect elastic model, anelastic model was discussed and analyzed in detail.
在耦合热弹性问题变分原理的基础上，导出非定常温度场热弹性平面问题的有限元法基本方程。
The fundamental equations in finite element method for unsteady temperature field elastic plane problem are derived on the bases of variational principle of coupled thermoelastic problems.
实验和研究表明：基于经典弹塑性及蠕变理论的本构方程，非弹性应变在高温下其本质上是时间相关的。
The experimental and research results indicate that non-elasticity strain associate with time in nature according to constitutive equations of the classical elastic-plastic and creep theory.
在弹性梁方程满足渐近非一致非共振条件时，讨论了方程解的存在性。
This paper discusses the solvability of an elastic beam equation under asymptotic nonuniform nonresonance condition.
基于可反映桩基荷载传递性状的“套叠”式桩周土变形模式和弹性理论，将等直径部分和扩径体部分桩周土分段建立位移方程，推导了桩身带有扩径体的非刚性和刚性DX抗拔桩的荷载-位移关系的解析解。
Based on the elastic theory and the overlapped-form strain mode of the soil, the paper deals with an analytical solution for the load-displacement relationship of non-rigid and rigid DX pullout pile.
本文采用直接边界元法，研究了土的弹塑性、粘塑性（含蠕变）及温度应力等非弹性状的边界积分方程求解摸式。
With direct B. E. M. the boundary integral equations of soil for elastoplasticity, viscoplasticity cluding creep and temperature stress are researched and soluted.
在非相对论性原理下建立了二端面弹性转轴的动力学方程。
A novel relative dynamics equation of the elastic rotation shaft possessed twain side is built in the nonrelativistic theory in this paper.
在非相对论性原理下建立了二端面弹性转轴的动力学方程。
A novel relative dynamics equation of the elastic rotation shaft possessed twain side is built in the nonrelativistic theory in this paper.
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