Exam (elaborations)
MECH221 ASSIGNMENT #5 – CHAPTER 6 SOLUTIONS CONCORDIA UNIVERSITY
- Course
- Institution
MECH221 ASSIGNMENT #5 – CHAPTER 6 SOLUTIONS CONCORDIA UNIVERSITY
[Show more]
Seller
Follow
smartzone
Reviews received
Content preview
MECH221 ASSIGNMENT #5 – CHAPTER 6 SOLUTIONS CONCORDIAUNIVERSITY
6.11 Figure 6.23 shows the tensile engineering stress–strain curve in the elastic region for a gray cast iron.
Determine (a) the tangent modulus at 25 MPa (3625 psi) and (b) the secant modulus taken to 35 MPa (5000 psi).
Solution
(a) This portion of the problem asks that the tangent modulus be determined for the gray cast iron, the
stress-strain behavior of which is shown in Figure 6.23. In the figure below is shown a tangent draw on the curve
at a stress of 25 MPa.
The slope of this line (i.e., ∆ /∆ ), the tangent modulus, is computed as follows:
57 MPa 5 MPa
= = 86,700 MPa = 86.7 GPa (12.6 106 psi)
0.0006 0
(b) The secant modulus taken from the origin is calculated by taking the slope of a secant drawn from the
origin through the stress-strain curve at 35 MPa (5,000 psi). This secant modulus is drawn on the curve shown
below:
Page 1 of 11
, Page 2 of 11
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller smartzone. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62491 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now