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Yield Stress Fy2 Given Relative Weight is a material property calculation that determines the yield stress of a second material based on its relative weight compared to a reference material. This relationship helps engineers compare material performance when weight considerations are important.
The calculator uses the formula:
Where:
Explanation: The formula shows that yield stress decreases as relative weight increases, following a power law relationship with exponent 3/2.
Details: Accurate yield stress calculation is crucial for material selection, structural design, and ensuring safety margins in engineering applications where weight optimization is critical.
Tips: Enter Yield Stress 1 in Pascal, Weight 2, and Weight 1. All values must be positive numbers. The relative weight is calculated as W2/W1.
Q1: What is yield stress?
A: Yield stress is the stress at which a material begins to deform plastically. Beyond this point, permanent deformation occurs.
Q2: Why is the exponent 3/2 used in the formula?
A: The 3/2 exponent comes from the scaling relationship between strength and weight in structural materials, particularly in bending-dominated applications.
Q3: Can this formula be used for all materials?
A: This formula is particularly useful for comparing similar materials (e.g., different steel grades) but may need modification for dissimilar materials.
Q4: What are typical yield stress values for common materials?
A: Mild steel: 250 MPa, High-strength steel: 350-700 MPa, Aluminum alloys: 100-500 MPa, depending on the specific alloy and treatment.
Q5: How does relative weight affect material selection?
A: Materials with higher strength-to-weight ratios are preferred in applications where weight reduction is critical, such as aerospace and automotive industries.