Abstract. Modal analysis is an effective method to determine vibration mode shapes and weak parts of the complex mechanical system, its main purpose is to use optimal dynamics design method of mechanical structure system instead of the experience analog method. Reciprocating mud pump is the machine that transport mud or water in the process of drilling, which is an important component of the drilling equipment. In order to improve the performance of reciprocating pump and decrease the failure of the connecting rod caused by vibration during running, a modal analysis method is performed. In this paper, a three-dimensional finite-element model of connecting rod was built to provide analytical frequencies and mode shapes, then the modal distribution and vibration mode shapes for connecting rod were obtained by computing. The results showed the weakness of the connecting rod, which would provide the reference to dynamics analysis and structural optimization for connecting rod in the future.
Virtual Manufacturing is the use of a desktop virtual reality system for the computer-aided design of components and processes for manufacture. Virtual reality is a computer technology that enables users to view or 'immerse' themselves in an alternate world. Immersion and man-machine interaction is the core of VR technology. VR technology has obvious applications in education and training where potentially dangerous tasks such as flying or surgery are carried out and also has been used for many different applications in a variety of industries. This work provided some insight into reconstructing of virtual machining center by using Virtools platform and realized the machining center navigation and man-machine interactive operation. In this virtual environment, users can operate the machining center and complete a product machining process. Through this virtual platform, users can obtain knowledge about structure of machining center and get familiar with the complex operation of machining center before they have opportunity of manipulating the real machining tool, which is desirable for practical operation.
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