弹性模量为E,泊松比为data:image/png;base64,R0lGODlhDwARAHcAMSH+GlNvZnR3YXJlOiBNaWNyb3NvZnQgT2ZmaWNlACH5BAEAAAAALAIABAAKAAgAhAAAAAAAAB0AHR0AAAAAHQAcSAAzWh1GbDIdADIAHTMAADVbbjNGbjNbgFozAFozHUhuf2xGHW5GM25uWX9/XX9uSGaIiIBbMwECAwECAwECAwECAwECAwECAwECAwECAwUfIAAgYimIQWCUTgmoZeIOq9i4iqsr66EDCgLjB/TpQgA7,内径为d,外径为D,长度为L的空心圆轴两端承受转矩m作用而产生扭转变形,其应变能为data:image/png;base64,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