【摘要】 为更有效地求解激励随机热传导问题,利用有限元技术和虚拟激励法,建立了激励随机热传导问题的数值求解模型,可考虑平稳与非平稳的随机激励。数值算例中的对比分析表明:通过虚拟激励技术,可有效计算真实响应的自/互功率谱密度和响应偏差。此外,对激励随机热传导逆问题进行了初步探讨。更多还原

【Abstract】 Based on finite element and pseudo excitation methods,numerical model was developed for solving the heat conduction problem with stochastic excitations more effectively.The proposed model is applicable for both steady and unsteady excitations.Comparison of numerical examples indicates that the auto/cross power spectral density and the deviation of response can be calculated by utilizing the pseudo excitation skill effectively.Some preliminary investigation was carried out for the inverse heat conduction problem with stochastic excitation as well.更多还原