Design to absorb the kinetic energy from an impact

Assignment Help Mechanical Engineering
Reference no: EM13843655

A helmet has an open cell polystyrene foam liner that is design to absorb the kinetic energy from an impact. The Foam has a relative density of 10% and the young module of the solid polystyrene that the foam is 1.5Gpa. How much energy per volume in J/m^3, can the foam absorb if it is loaded in uni axial compression to uni axial compression to strain 80%, please assume that C1=1.0 and C2=0.05

Reference no: EM13843655

Questions Cloud

Does the component fail according tresca criterion : Mpas Calculate the difference between max an min principal stresses Does the component fail according tresca criterion ?
Estimate the allowance for doubtful accounts : Estimate the allowance for doubtful accounts
Drive an equation for the increase in shear stress : Drive an equation for the increase in shear stress, required to move a dislocation past a precipitate of radius r , with a surface energy T, if the precipitate has spacing L, in the slip plane
Concept of information risk and its components : Using the concept of information risk and its components, discuss why you decide to hire C?
Design to absorb the kinetic energy from an impact : A helmet has an open cell polystyrene foam liner that is design to absorb the kinetic energy from an impact. The Foam has a relative density of 10% and the young module of the solid polystyrene that the foam is 1.5Gpa. How much energy per volume in J..
Prepare the journal entries : Prepare the journal entries
Partnership interest at year-end : The partnership distributed $12,000 cash to Betty.  Her share of partnership recourse liabilities on the last day of the partnership year was $16,000.  Betty's adjusted basis (outside basis) for her partnership interest at year-end is:
Evaluate the strategic issues including the degree : Evaluate the strategic issues including the degree to which they may impact the strategic position, direction, decisions, and activities of the organization - Propose strategies and recommend approaches to mitigate strategic issues that represent ..
How to build a reputation as a good ict professional : how to build a reputation as a good ICT professional. Itrequires you to write about your perceptions of a good ICT professional, your work ethic and values,how you communicate with work colleagues.

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Package design

Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.

  Mechanical engineering questions

Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.

  Automatic control

DOF system and Find the differential equation describing the system

  Write a paper on boyle''s law

Write a paper on Boyle's law and describe Compression and Combustion stroke . Also explain Charles's law and illustrate SI engine and CI engine.

  Verify the law for parallelogram of forces

To Verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces. These laws are very useful to calculate unknown forces in very short time.

  Discharge pressure of the compressor

What is the discharge revised discharge pressure of the compressor.

  The Case for Global Accounting Standards

The role of IFRS in both developing and developed capital markets.

  Wind turbine

Wind turbines are becoming more and more common as a method of energy production, wind turbines by their very nature are dynamic and are subject to and create their own internal and external kinematics and kinetics.

  Advanced design methodologies

8 x product engineering and design review (week 2 – 12), ~3 pages per item which must contain a brief description of the product then delve into concepts such as materials selection, manufacturing methods, life cycle analysis, recyclability and overa..

  Design of absorption column and the cooler

Design of absorption column and the cooler. Process design of other units should be completed along with pipe sizes.

  Determine the maximum total bending moment

Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.

  Force of the water on the gate

Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd