Phase-field elasticity model based on mechanical jump conditions
Phase-field elasticity model based on mechanical jump conditions
复制标题
基于机械跳跃条件的相场弹性模型
DOI:
10.1007/s00466-015-1141-6
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发表时间:
2015
影响因子:
4.1
通讯作者:
B. Nestler
中科院分区:
文献类型:
--
作者:
D. Schneider;O. Tschukin;A. Choudhury;M. Selzer;T. Böhlke;B. Nestler
Computational models based on the phase-field method typically operate on a mesoscopic length scale and resolve structural changes of the material and furthermore provide valuable information about microstructure and mechanical property relations. An accurate calculation of the stresses and mechanical energy at the transition region is therefore indispensable. We derive a quantitative phase-field elasticity model based on force balance and Hadamard jump conditions at the interface. Comparing the simulated stress profiles calculated with Voigt/Taylor (Annalen der Physik 274(12):573, 1889), Reuss/Sachs (Z Angew Math Mech 9:49, 1929) and the proposed model with the theoretically predicted stress fields in a plate with a round inclusion under hydrostatic tension, we show the quantitative characteristics of the model. In order to validate the elastic contribution to the driving force for phase transition, we demonstrate the absence of excess energy, calculated by Durga et al. (Model Simul Mater Sci Eng 21(5):055018, 2013), in a one-dimensional equilibrium condition of serial and parallel material chains. To validate the driving force for systems with curved transition regions, we relate simulations to the Gibbs-Thompson equilibrium condition (Johnson and Alexander, J Appl Phys 59(8):2735, 1986).
影响因子:
3.3
作者:
M. Apel;S. Benke;I. Steinbach
通讯作者:
I. Steinbach
影响因子:
3.2
作者:
JOHNSON, WC;ALEXANDER, JID
通讯作者:
ALEXANDER, JID