Nonlinear numerical simulation of roll-over protective structure of cabs in underground engineering services vehicles

In order to avoid the casualties when the underground engineering services vehicles overturned, and improve vehicles' reliability and car safety at work, it is necessary for the cabs to use the roll-over protective structure (ROPS). It requires that the ROPS should have sufficient lateral stiffness to prevent deformation, while also can absorb some energy. The nonlinear finite element model of the FW-6 services vehicle's roller safety-cab ROPS was established with the elastic-plastic theory and the finite element nonlinear analysis method. And the lateral, vertical and longitudinal load forces were loaded to the model step-by-step. The results indicated that the energy absorption as the cab's deformation had achieved the international requirement, and the ROPS structural component did not trespass into deflection-limiting volume (DLV). It met the requirements of ISO 3471 and ISO 3164. This method provides some reference for the design of underground vehicle's safety cab.