Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

In all but a very few vehicles today crumple or crush zones are employed as a method to decrease energy transfer to occupants in a crash.  For the most part crumple zones form a structural part of car such as frontal rail or rear bumper beams.  In the early phases of development these crumple zones can be designed through a series of equations which take in account materials properties and geometrical features.
This assignment comprises the subsequent three sections:

problem1.  Provide a literature review of thin-walled tube crushing and bending high-lighting mechanisms of deformation with respect to material and geometry including such phenomena of strain-rate sensitivity.

problem2.  Using an envelope of 600 mm in length, and a maximum of 100mm width and 100mm depth; design a crumple zone that is capable of absorbing ~8,500 Joules of energy at 50 km/h.  You can choose any geometrical shape and material to achieve this, but all choices have to be backed up by analytical equations.  Use a crush distance of 75% of the original tube length (ie. 400 mm).  Make sure if you use a strain-rate sensitive material you include this into your calculations.

problem3.  Depending on your material choice do the following:

i. If you select a metallic material for a single lobe of deformation show how strain and stress profiles and ultimately fracture (if takes place) progress throughout the deformation, show this through explanations, computation and images

ii. If you select a composite material show how the fracture mechanisms/stress/strain work through lobe or ribbon formation; again show this by explanations, computation and images

- This should be done as your own personal piece of work, no group work allowed.
This assignment should be presented as a formal methodical report with clear unambiguous references.  All computation and assumptions should be provided together with a complete explanation of all the terms employed.  This assignment should be typed and in Microsoft Word *.docx format.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M9884

Have any Question? 


Related Questions in Mechanical Engineering

A 1 in times 10 in plank on a redwood deck has l 48 in

A 1 in × 10 in plank on a redwood deck has L = 48 in long and supported on three joists that rest on the ground and so do not bend. The joists act as pin/roller supports for the plank. If a 130 lb person stands on the pl ...

The figure illustrates the operation of an air lift pump

The figure illustrates the operation of an air lift pump. Compressed air is forced into a perforated chamber to mix with the water so that the specific gravity of the air-water mixture above the air inlet is 0.5. Neglect ...

Complete the report with taking care the followingschapter

Complete the report with taking care the followings: Chapter 1 Air Pollution Historical Remarks What Is An Air Pollutant? Pollutant Emissions Primary Gaseous Pollutants Primary Particulate Matter Radioactive Pollutants S ...

Example how an p-channel flash eprom would work is the

Example how an p-channel flash EPROM would work. Is the p-channel worse or better than the n-channel asides form speed? Estimate the write and erase times (using the Fowler-Nordheim tunneling formulae for a triangular ba ...

1 a pressure of 10 mpa is applied to 025 m3nbspof a liquid

1. A pressure of 10 MPa is applied to 0.25 m 3  of a liquid, causing a volume reduction of 0.005 m 3 . Determine the bulk modulus of elasticity. 2. The bulk modulus of elasticity for water is 2.205 GPa. Determine the cha ...

1 two clean and parallel glass plates separated by a gap of

1. Two clean and parallel glass plates, separated by a gap of 1.625 mm, are dipped in water. If σ = 0.0735 N/m, determine how high the water will rise. 2. A glass tube having an inside diameter of 0.25 mm and an outside ...

If the kansas city building code specified that a floor

If the Kansas City Building Code specified that a floor structure must support a live load of 4.79 kPa (100 psf), and if the walkway length L = 9.1 m = 30.0 ft and width b = 2 m = 6.56 ft, what contribution is made to th ...

1 determine the capillary rise for a water-air-glass

1. Determine the capillary rise for a water-air-glass interface at 40°C in a clean glass tube having a radius of 1 mm. 2. Determine the difference in pressure between the inside and outside of a soap film bubble at 20 °C ...

A rigid vessel of volume 0400 m3 containing h2 at 2125degc

A rigid vessel of volume 0.400 m3 containing H2 at 21.25°C and a pressure of 715 X 10 3 Pa is connected to a second rigid vessel of volume 0.750 m 3 containing Ar at 30.15°C at a pressure of 203 X 10 3 Pa. A valve separa ...

A dilute suspension contains ten spheres per liter a sample

A dilute suspension contains ten spheres per liter. A sample (one tenth of that solution) is removed. What is the probability that there is (a) at least one sphere, (b) at most one sphere in the sample. You may assume th ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro