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Based on structural optimization and application of high-strength steel weight of heavy dump truck

Author: GaoJinLing
Tutor: MaLi
School: Wuhan University of Technology
Course: Vehicle Engineering
Keywords: Heavy Duty Dump Truck Lightweight Optimization High- strength steel
CLC: U465.11
Type: Master's thesis
Year: 2010
Downloads: 250
Quote: 2
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Abstract


This paper studies the heavy-duty truck and the main cargo compartment, lightweight subframe problems, through the cargo compartment structural optimization design as well as the cargo compartment and the frame for high strength steel strength generation design, made a very good light Quantitative results; and deduced strength of high strength steel sheet thickness generation design in replacement formulas verify the formula utility and ease of use. First, the heavy-duty dump truck lightweight study explains the background to explain the significance of the research projects; and in accordance with domestic and international development of lightweight profiles and Research, presented using the finite element technique and application of new lightweight materials research methods . Secondly, in the cargo compartment and the main heavy-duty dump truck, the structural characteristics of the sub-frame analysis, drawings provided by the enterprise as a basis for establishing the cargo compartment and the main, sub-frame combination geometry. Using shell elements for the cargo compartment and the main and sub-frame main structure of the mesh, using solid elements of their local structure discrete. Taking into account the cargo compartment in the lift instantly just left the force when the subframe is the worst situation, therefore, in the analysis using ANSYS lifting moment conditions selected to be calculated. The conditions of the Compartment Compartment overall stress distribution and the deformation were determined by calculation and analysis, the results can be developed for the project commissioned by enterprises in the design of products to provide a reference. Again, because the overall stress level cargo compartment is not high, but more serious stress concentration, the paper respectively Compartment chassis, both sides of the structure of local structures to improve the design, not only the stress concentration has been largely diminish, or even eliminate some of the local stress concentration phenomenon, but also makes them the stress distribution becomes more reasonable, the final weight of the cargo compartment to get optimal results make significant decline in the quality of the cargo compartment reduces 820.43kg. Then, in the cargo compartment structure improved, based on the re-use structure optimization method Compartment dimensions for lightweight research, to ensure cargo compartment loading capacity is not reduced under the premise that the overall quality of the cargo compartment and reduces 244kg; through lightweight structural optimization using these two methods, Compartment weight dropped 24.5%. Finally, the use of structured improved cargo compartment model and the establishment of the Lord, high-strength steel sub-frame model generation design strength, in the process using the derived formula for its high strength steel components for wall thickness replacement replacement for goods compartment with the main, high-strength steel subframe strength generation design bring great convenience. After the adoption of the final round of data, Compartment quality reduced 1099.42kg; primary subframe weight reduction 286.68kg, a decline of 15.13%.

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive Materials > Ferrous metals > Steel, alloy steel
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