25/05/2016
What is the main difference between elastic design and plastic design? What does shape factor = (zp/ze) physically signify? Quora Sign In
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What is the main difference between elastic design and plastic design? What does shape factor = (zp/ze) physically signify? 2 Answers Anonymous
Related Questions For the design of structures, what is the type of structural analysis used (elastic, inelastic or plastic)? Is it defined by any criteria? Structural Engineering: What are the main differences between SAP2000 and Etabs? Which one is better for building analysis and design? Structural Engineering: What is the difference between limit state design and working stress design?
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Ze is the Elastic Section Modulus Zp is the Plastic Section Modulus Ze is used to determine the maximum bending moment up to the point where the extreme fiber has yielded elastically. All other fibers will be below their elastic yield stress. Zp is used to determine the maximum bending moment at the the point where all fibers have yielded elastically and the entire section is behaving plastically. This is the point when the so called plastic hinge has developed. Shape factor is just the ratio of these two parameters, it has no physical meaning, it is just useful in computation. It is worth noting that Shape factor is very high for shapes like rectangles (1.5) while for an I beam it is usually around 1.1 to 1.2. The reason is that the rectangle has a lot more material below the extreme fiber. For the I beam, once it has reached yielding there isn't much material left, just a little bit of flange and the tiny strip of web. Of course if we create a new factor that compares the section Modulus (either one) with the area of the section (The bending strength to area/weight ratio), you'll quickly be reminded of why we use an IBeam in the first place.
What is the diffrence between structural design and structural analysis? What is the physics behind the presence of two yield points in the standard stress vs. strain characteristics of mild steel? What kind of beha... What is the difference between SAP2000, ETABS and SAFE from point of analysis and design of reinforced concrete structures? What is the difference between structural analysis and design? What is the difference between various methods and theories of deg RCC beam, slab? What is the difference between Staad Pro and Tekla structural designer? What is the design and construction difference between a transfer beam and an ordinary beam?
Written 27 Jan 2015 • View Upvotes
Related Questions More Answers Below For the design of structures, what is the type of structural analysis used (elastic, inelastic or plastic)? Is it defined by any criteria? Structural Engineering: What are the main differences between SAP2000 and Etabs? Which one is better for building analysis and design? Structural Engineering: What is the difference between limit state design and working stress design? What is the diffrence between structural design and structural analysis? What is the physics behind the presence of two yield points in the standard stress vs. strain characteristics of mild steel? What kind of beha... Satish Kumar 1.7k Views
It is analysis not design. Shape factor indicates How the moment capacity varies in both analysis w.r.t shape Written 27 Jan 2015 • View Upvotes • Answer requested by Nayan Dutta
100+ million people read Quora every month Related Questions What is the difference between SAP2000, ETABS and SAFE from point of analysis and design of reinforced concrete structures? What is the difference between structural analysis and design? What is the difference between various methods and theories of deg RCC beam, slab? What is the difference between Staad Pro and Tekla structural designer? What is the design and construction difference between a transfer beam and an ordinary beam?
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25/05/2016
What is the main difference between elastic design and plastic design? What does shape factor = (zp/ze) physically signify? Quora
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