碰撞问题

AMME5912 – CRASH ANALYSIS & DESIGNASSIGNMENT 1LS-DYNA – ROAD HARDWARE DESIGNThis assignment is due 11:00am, Thursday 31st of March (Week 5)(Group of 3, 2 or 1)This is a set assignment worth 15% in the subject AMME5912 using PreSys2014R1 and LS-DYNA. The aim of this assignment is to demonstrate your group’s understanding of a typical basic road hardware design exercise in LS-DYNA which a junior engineer may encounter in industry.This assignment requires that you work in a group of two or on your own in the design of a piece of roadside hardware to incorporate into a simulation involving the Ford Taurus which is travelling at a speed in accordance with the following formula;V Taurus = ABS (60 + Lowest Last Digit of the two Student SID’s) Km/hre.g. For two students 310275433, 307111228, 306432899∴V Taurus = ABS (60 + 3) Km/hr = 63 Km/hrFor a single student effort simply use the last digit of your SID in the above equationThe final choice of design roadside hardware is up to your group, however, two or three designs should be considered.Key Requirements in your Assignment;Design a piece of roadside hardware (must have at least some degree of realism!) to minimise the impact to the point where intrusion into the passenger compartment is kept to a reasonable minimum after the vehicle has come to a standstill. Use the Taurus.dyn file given to you in Tutorials. You are not to alter the material properties or thicknesses of any of parts within the Taurus model.DO NOT PUT YOURSELF IN ANY POTENTIAL RISK OR DANGER IF YOU CHOOSE TO PHYSICALLY MEASURE ANY ROADSIDE STRUCTURE.An approximate design based from a photograph is fine.Make sensible assumptions about the material used in the piece of roadside hardware that you have modelled. Modern mild steel has a Yield Point of approximately 350MPa. Research in this part is mandatory.Vary the shape and or thickness of the roadside hardware and report on how it best performs to absorb energy. The weight of the roadside hardware is not crucial factor and the main contact face could be sacrificial.Your report should be similar to what a junior engineer may produce in their first year of work. The following key points should be included;a.An introduction.b. A contents page.c.Discussion at key steps with comments that describe why decisions were made. Eg. The piece of roadsidehardware was designed in this method because ...d.Good graphics which are labelled and referenced within your report at each key point.e.An in depth conclusion which provides the reader with a broad summary of your work with your finalrecommendations.f.All references used.The report must be in colour and in pdf format. Submit your report and final .dyn files into Blackboard.THIS ASSIGNMENT SHOULD TAKE AN AVERAGE GROUP OF TWO TO THREE STUDENTS 10HOURS EACH TO COMPLETEAMME 5912Assignment 1 Feedback Sheet 20161. Research and design at least two appropriate examples of roadside hardware.0.0 No attempt, 1.5 Basic discussion and clear drawings / graphics of two designs, 3.0 Comprehensive discussion & clear drawings / graphics of two or more designs that are well integrated in to the assignment./32. Demonstrate sound reasoning behind the final selection of design.0.0 No attempt, 1.5 Basic discussion on selection of one final design with some graphics used to support argument, 3.0 Extensive clear and thorough discussion incorporating graphics on the selection of one final design./33. Research and implement a suitable material for the roadside hardware used.0.0 No attempt, 1.5 Basic discussion and attempt at usage of researched material, 3.0 Comprehensive discussion and implementation into nominated deck of a researched material including σ and ε graph s and references as needed./34. Evidence of optimization in energy absorption in the design.0.0 No attempt, 1.5 Some attempt at optimization either by varying material thick ness or shape with limited discussion, 3.0 A well documented attempt at optimization by variation of material thickness and shape or other factors with extensive clear discussion./35. Evidence of minimal if any intrusion of the firewall into the passenger compartment.0.0 No attempt, 1.5 Some attempt at minimizing the intrusion supported by basic graphics and some degree of discussion. 3.0 Extensive discussion supported by excellent graphics which document minimal intrusion into the passenger compartment./36. Correct use of Taurus.dyn and .k files as needed.0.0 No attempt, 1.5 The use of combined .dyn file for Taurus and hardware with some errors and extensive warnings and or repairs needed to deck. 3.0 The use of separate .dyn and .k structure with no critical errors and minimal warnings./37. Overall Impression0.0 No attempt, 0.5 an average attempt with limited discussion, 1.0 A good submission that is clear and provides comments and demonstrates some level of structure, 2.0 An excellent submission that is well presented and considers an introduction, contents page, discussion at all key points, relevant graphics, appropriate conclusions and references./2TOTAL /20FINAL TOTAL /15 Marker __________________________。