Reference no: EM133962559
Learning Outcome 1: Evaluate different material models and element types to approximate the behaviour of different materials and structures.
Learning Outcome 2: Apply commercial Finite Element Analysis software for linear and nonlinear analysis of structures.
Learning Outcome 3: Critically apply elastoplastic constitutive models.
Assessment guidelines
Produce a 2000-word +/- 10% (excluding references and appendices) Finite Element Software Report based on the dynamic explicit analysis performed on the truss bridge below, using Abaqus/Explicit. The truss in the figure below is a 2D structure, which is dynamically loaded with the concentrated forces shown during a 1 second loading step time, and 10 seconds total duration with 9 increments. The selection of all material parameters, such as Young's Modulus, Poisson's ratio, loading steps and types, applied boundary conditions etc., has been performed. The structural material for the truss system is AISI 1005 (UNSG10050) carbon steel, Young's Modulus of 200E+9, Poisson's Ratio of 0.3, Density of 7872kg/m3, Specified minimum yield strength of 280MPa, Ultimate tensile strength of 310 MPa and a cross-sectional thickness of 3.14E-4 m. The span of the truss is 60 m and a height of 10 m. Each section is reinforced as indicated, below.
Your report should be structured in line with the assessment need as follows.
An introduction and essential background to the Dynamic Explicit analysis and the key structural characteristics of the given truss bridge, and a clear definition of the objectives of the assignment. Get reliable and affordable assignment help today!
Based on the course material for week 7, produce a clear outline and description of the procedure you would have followed to create and model the above structure in Abaqus.
Provide a detailed deductive report based on the resulting assembly of the truss structure created on the Abaqus software with the concentrated loads, nodes and edges provided below (Figures 1,2, 3, 4, 5, 6, 7, and 8). Support your position with relevant literature. The units of the measured variables are as followed: Stress (Pa), Deformation (m), Force (N)
The edges around the highest deformation area (2,3 and 13) are plotted below. If the acceptable maximum strain is 40%, what is your judgement of the selected material?
Based on the stress information provided in this brief and the results so far, justify and explain why the material selected for the construction for the truss is fit for purpose or not. The adopted safety factor for the design is 0.75.
Explain the difference between the plots for edges 1_9, and edges 10_14. Is the structure stable under the condition of edges 1_9, and edges 10_14? Provide detailed explanation and supported with relevant literature.
Based on the contour map in Figure 5, extract relevant results of stress and deformation from any 5 nodes and 5 edges in a tabular form.
If the cross-sectional area of the truss material is increased to 5.0E-3, what difference will it make in the design life of the truss bridge when compared with the original design cross- sectional thickness of 3.14E-4 above. Outside stress and deformation, equally consider cost of the material in your analysis.
Provide critical discussion and interpretation of the results, and comments regarding whether the structure is strong enough to withstand the applied loads.
Design/structural improvements that could be made so that the bridge can withstand greater loads of longer duration.