Handling And Ride Performance Analysis Of Fire-Extinguishing Tanker

The handling and ride are the important dynamics performance of vehicle and the key problems in the vehicle design process. Based on the multi-body dynamics theory and in combination with a fire-extinguishing tanker configuring project founded on existing chassis, a heavy-duty truck multi-body model is built on ADAMS including the following details:the front and rear suspension system with leaf-spring, steering system, frame and cab mount system. The connecting in modeling between the components is built with constraint and force elements of ADAMS tool-box function according to the real structures. The leaf-spring are simplified and modeled as beam elements.The paper processes steady static circular test procedure, steering transient response test and ride random input running test by setting on ADAMS. By taken the test results which included yaw rate, lateral acceleration, under-steer degree, roll angle and weighted acceleration root mean square value as evaluating indicator and suspension stiffness and damping as factors, the suspension parameters are optimized by orthogonal design method.Based on simulation study, several influence factors of handling and ride are discussed. Theoretical analysis and modeling process of vehicle dynamic model are taken, which can provide theoretical and practical basis for successive study. The optimization results of parameter can be taken as theory principle of intensive study.The study in the paper is a good attempt for the technology of virtual prototyping in fire-extinguishing vehicle design and analysis. Aimed at improving the product design quantity, expediting development speed and reducing real laboratory test, the paper makes directive effect on the development and design of fire-extinguishing tanker configuring project.