Lightweight Optimization of Aircraft Engine Disassembly and Assembly Vehicle Structure
Taking a aircraft engine disassembly vehicle designed by us as the research object,the weight optimization is carried out,and the modal and mechanical properties of the disassembly vehicle before and after the weight opti-mization are compared,to ensure that the mode and overall structural strength of the light-weight disassembly vehicle meet the design requirements.Firstly,it is found that the thickness of the bar has been reduced by 50%,and the weight of the whole vehicle has been reduced by 185 kg,which is 12.5%lower than that before the lightening.Secondly,through the comparison of mechanical properties,it is found that the maximum stress value of the car after light-weighting is 187 MPa,which is 6.3%higher than that before light-weighting,but far lower than the allowable stress value of 355 MPa for carbon-manganese steel,and the maximum displacement after light-weighting is 12.23 mm,which is up 9.1%compared to the pre-lightweight.But the overall deformation is small.Finally,through the modal comparison,it is found that the natural frequency of the first-order modal of the light-weight disassembly and assembly vehicle is 13.05 Hz,much higher than the excitation frequency of the road surface from 3 to 4 Hz.There-fore,the modal and mechanical properties of the light-weight disassembly vehicle meet the design requirements.
engine disassembly and assemblylightweightmodemechanical properties
NETL
NSTL
万方数据
