The Trump administration’s crackdown on the $12 billion Child Care and Development Fund has rattled child care providers and ...
本文系统研究了非线性Pasternak型弹性地基上Kirchhoff板的动力响应问题。作者通过引入非线性Pasternak地基模型,构建了包含Winkler刚度(ξ)和Pasternak非线性弹簧刚度(η)的修正控制方程。研究采用改进的tanh展开法(modified tanh expansion method)和拟设法(ansatz method ...