中文摘要：

造船起重机械设计多根据相关资料和经验公式采用常规的静态设计，周期长。成本高，性能差。基于虚拟样机技术，本文利用Pro／Engineer与ADAMS联合建模方法，建立了300t造船门式起重机的三维实体模型，并将起重机模型导入ADAMS软件，对部件施加相应的约束和载荷。最终建立起虚拟样机。对虚拟样机进行多刚体系统动力学仿真分析，实现了门式起重机在各种工况下运行状态随时间变化的过程，验证了设计的正确性，预览了产品性能，重现并分析了典型事故。仿真分析数据可用于估计和准确推断实际运行的各种数据。为门式起重机结构强度的动态分析和动态设计提供了依据，为设计经济、可靠、稳定的高性能门式起重机提供了有力的工具和实现方法。

英文摘要：

The design of shipbuilding gantry crane is mostly based on static methods, using statistics of similar products and empirical formula, which often means a long cycle, high-cost and low-quality. In this paper, based on the technique of virtual prototype, a virtual prototype model of 300t shipbuilding gantry crane is established by integrating Pro/Engineer with ADAMS, that is, using the threedimensional solid modeling software Pro/Engineer to establish three-dimensional model of the system, then importing the model to ADAMS and adding corresponding constraints and loads on the components. With the virtual prototype, dynamic simulation of the muhi-body system is carried out, including the running states of the mechanism under various working conditions. The simulation validates the design, shows the performance of production, reproduces typical accidents in true conditions and analyzes the causes of these accidents. Simulation results can be used to estimate parameters related with the gantry crane in actual running conditions, provide a reference for the dynamic analysis of gantry crane＇s structural strength and dynamic design for economic, credible, stable and high-performance shipbuilding gantry crane.