Smith Jack C
Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
J Res Natl Bur Stand A Phys Chem. 1975 Mar-Apr;79A(2):419-423. doi: 10.6028/jres.079A.007.
The coefficients in van der Poel's equation for calculating the shear modulus of a particulate composite have been greatly simplified, making the calculation much less unwieldy. Approximate solutions of van der Poel's equation are also derived, and it is shown that one of the low order approximations is Kernels equation, or Mashin and Shtrikman's equation for the highest lower hound. The Kerner approximation is often too low in value when the volume fraction of filler exceeds 0.2, but it can he used to provide further simplification in van der Poel's equation, or it can be used as a first approximation in a Newton's method of solution.
用于计算颗粒复合材料剪切模量的范德波尔方程中的系数已被大大简化,使得计算不再那么繁琐。还推导了范德波尔方程的近似解,结果表明其中一个低阶近似是克尔纳方程,即马申和什特里赫曼关于最高下限的方程。当填料的体积分数超过0.2时,克尔纳近似值往往过低,但它可用于进一步简化范德波尔方程,或者可在牛顿解法中用作一阶近似。