Consider the following modes regarding the failure of an axially loaded column:
A. Local buckling
B. Squashing
C. Joint buckling
Choose the correct answer from the options given below:
A. Local buckling
B. Squashing
C. Joint buckling
Choose the correct answer from the options given below:
Show Hint
- B and C only
- A and B only
- A and C only
- A, B and C
The Correct Option is B
Solution and Explanation
Step 1: Define the failure modes.
• Local Buckling (A): Occurs when the individual plates (flanges or web) of a column buckle before the whole column does. This is common in thin-walled sections.
• Squashing (B): Also known as yielding, this occurs in very short (stub) columns where the material reaches its yield stress before any buckling occurs.
• Overall Buckling (Flexural): The column as a whole bends laterally.
Step 2: Evaluate "Joint buckling" (C).
Buckling is a member-level or plate-level phenomenon. While a "joint" in a frame might fail due to detailing or connection issues, "Joint buckling" is not a standard mode of failure for an individual axially loaded column.
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