কীভাবে Bending Stress গণনা করবেন
Bending Stress কি?
Bending stress is normal stress from moment loading, the primary stress in beams. It varies linearly across the section, maximum at outer fibers.
সূত্র
Calculate: σ = M×c/I where M is moment, c is distance from neutral axis, I is moment of inertia
- M
- I/c) — I/c)
- I
- I value — Variable used in the calculation
ধাপে ধাপে নির্দেশিকা
- 1Calculate: σ = M×c/I where M is moment, c is distance from neutral axis, I is moment of inertia
- 2Or: σ = M/S where S is section modulus (S = I/c)
- 3Results show stress distribution
সমাধান করা উদাহরণ
ইনপুট
M = 50 kN·m, I = 1×10⁹ mm⁴, c = 200 mm
ফলাফল
σ = 10 MPa at extreme fiber
Safe stress level
এড়ানোর সাধারণ ভুল
- ✕Using average stress instead of maximum stress
- ✕Forgetting compression and tension can develop simultaneously
সচরাচর জিজ্ঞাসা
Why does stress vary across the beam?
Outer fibers experience maximum stretch/compression; inner material near neutral axis experiences less.
How is section modulus useful?
S directly gives maximum stress: σ_max = M/S, simpler than calculating I and c separately.
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