<p attachment="true"><img attachment="true" src="https://www.jishulink.com/platform/static/ueditor/dialogs/attachment/fileTypeImages/icon_jpg.gif" a

<p>网格比较均匀的情况下用以下公式：</p> <div> <img src="https://img.jishulink.com/upload/202104/108ae7b8bfb84006b10dda6420b0bf48.jpg" title="00.jpg" alt="00.jpg" style="max-width:760px;"> </div> <p>即每个网格应力或应变积分后除以整个体积。</p>