According to St. Venant’s Theory, Yield Locus is
By BYJU'S Exam Prep
Updated on: September 25th, 2023

According to St.Venant’s theory, yield locus is a/an-
- Rectangle
- Rhombus
- Ellipse
- Hexagon
Table of content
Answer: B. Rhombus
According to St. Venant’s theory yield locus is a rhombus.
Solution
St. Venant’s theory is also known as the maximum principal strain theory. The theory is based on the premise that inelastic behaviour or failure is controlled by a maximum normal strain. According to St. Venant’s theory yield locus is a rhombus.
Theory of Failure |
Shape |
Maximum principal stress theory (Rankine) |
square |
Maximum principal strain theory (St. Venant) |
rhombus |
Maximum shear stress theory (Tresca) |
hexagon |
Maximum strain energy theory (Haigh) |
ellipse |
Maximum distortion energy theory (Von Mises) |
ellipse |
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