Analysis And Experimental Study On The Mechanical Properties Of The Frame Of The 2500 Fracturing Truck During Transportation

Fracturing truck is the main fracturing equipment in oil and gas field production often run on the cross-country road area. Frame as the main load-bearing components of fracturing truck, not only have to bear the weight of installing equipment, but also bear the impact load of the road, so the strength and rigidity of frame has higher requirements. In this paper, the finite element method and test method of combining the research frame in the process of migration of strength, stiffness, as to optimize the design of frame structure design and support.First of all, the fracturing truck frame finite element model is established, and the migration in the process of bending, torsion, emergency braking, emergency turn four kinds of working condition of statics analysis, get the corresponding frame under the condition of stress and strain distribution, find the position of the frame stress is weak. Modal analysis was also carried out on the frame, the natural frequencies of the frame were confirmed. The random dynamic analysis obtains the frame stress distribution under different road excitation, the stress distribution in the process of migration analysis frame.A vibration testing system is performed to determine the dynamics loading coefficient with sensors and Lab VIEW software. Both static strength and dynamic tests of the Fracturing Truck frame were conducted to verify the mentioned finite element model is reasonable. Comparison of results between the tests and the calculation indicates that the model is mostly correct. The recommended re-design measures and fatigue design were given.Then, based on the static structural analysis, fatigue life of the frame under condition of migration is calculated, combined with its S-N curve and load-time histories. The result proves that fatigue strength of the frame is also enough, for its safety factor is above 1.Last of all, the topology and size of the sub-frame are optimized with its bearing capacity improved 18.07% and its weight reduced 25.96%. And fatigue life of the optimized frame is enough all the same.