排序方式: 共有83条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
25.
S. P. Timoshenko Institute of Mechanics, Ukrainian Academy of Sciences, Kiev. Translated from Prikladnaya Mekhanika, Vol. 31, No. 9, pp. 31–37, September, 1995. 相似文献
26.
The structural theory of microdamage of homogeneous and composite materials is generalized. The theory is based on the equations
and methods of the mechanics of microinhomogeneous bodies with stochastic structure. A single microdamage is modeled by a
quasispherical pore empty or filled with particles of a damaged material. The accumulation of microdamages under increasing
loading is modeled as increasing porosity. The damage within a single microvolume is governed by the Huber-Mises or Schleicher-Nadai
failure criterion. The ultimate strength is assumed to be a random function of coordinates with power-law or Weibull one-point
distribution. The stress-strain state and effective elastic properties of a composite with microdamaged components are determined
using the stochastic equations of elasticity. The equations of deformation and microdamage and the porosity balance equation
constitute a closed-form system of equations. The solution is found iteratively using conditional moments. The effect of temperature
on the coupled processes of deformation and microdamage is taken into account. Algorithms for plotting the dependences of
microdamage and macrostresses on macrostrains for composites of different structure are developed. The effect of temperature
and strength of damaged material on the stress-strain and microdamage curves is examined
__________
Translated from Prikladnaya Mekhanika, Vol. 43, No. 6, pp. 3–42, June 2007. 相似文献
27.
28.
S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, Kiev. Translated from Prikladnaya Mekhanika, Vol. 31, No. 6, pp. 49–56, June, 1995. 相似文献
29.
30.