第三章 车身结构拓扑模型与力学模型 1、白车身（BIW-Body In White）通常指已经装焊好的白皮车身，主要包括车身结构 焊接总成和车身闭合件（Closure）焊接总成，不包括车身附属设备和装饰件。
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An optimization model for the body-in-white (BIW) of a commercial vehicle cab is set up with natural frequency as constraint and minimizing the volume of welding spots as the objective.
为某一商用车驾驶室白车身建立了以固有频率为约束条件，焊点体积最小化为目标的优化模型。
EMA on a car body-in-white (BIW) is conducted using both PolyMAX and least squares complex exponent method (LSCE) with their results compared and analyzed.
分别采用最小二乘复频域法和最小二乘复指数法对某轿车白车身进行了实验模态分析并对其结果进行比较和分析。
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