CFRP在商用车白车身驾驶室中的轻量化研究

通过实验与仿真建立了CFRP复合材料的本构模型.对某商用车白车身驾驶室进行静刚度和动态力学分析，在满足驾驶室车身刚度要求的条件下，选取CFRP复合材料对驾驶室模型进行材料代替，设计了钢/CFRP混合材料结构的驾驶室模型，并以通用有限元软件nastran对其求解.仿真结果表明，轻量化后的驾驶室模型的刚度基本保持不变，一阶扭转频率提升了27.3%，同时白车身驾驶室整体质量下降37.9 kg，降幅达到11.3%，轻量化效果显著，CFRP复合材料在汽车轻量化领域具有广阔的发展前景.

Study on the Lightweight of CFRP Composite Materials for the Body in White Cab of Commercial Vehicles

A constitutive model of Carbon Fiber Reinforced polymers (CFRP)composites was established based on the experiment and simulation analysis. Analyzing the static stiffness and dynamic mechanics of the body in white (BIW) cab of a commercial vehicle, and selecting the CFRP composite material as the material of the cab model, a steel/CFRP hybrid material structure was designed and solved by finite element software Nastran. The simulation results show that the rigidity of the cab model after weight reduction can remain basically the same with that of original cab, but its first-order torsional frequency is increased by 27.3%, and the overall quality of the BIW cab is reduced by 37.9 kg, a reduction of 11.3%. The obvious lightweight effect can prove the CFRP composite materials broad prospects in the automotive lightweight field.