Home
Back
Flexural Modulus Formula:
| From: | To: |
Flexural Modulus is a measure of a material's stiffness during bending. It represents the ratio of flexural stress to flexural strain in the elastic deformation region of a material.
The calculator uses the flexural modulus formula:
Where:
Explanation: The formula calculates the flexural modulus by dividing the applied flexural stress by the resulting flexural strain in the material's elastic region.
Details: Calculating flexural modulus is essential for material characterization, structural design, and quality control in various industries including construction, automotive, and aerospace.
Tips: Enter flexural stress in Pascals (Pa) and flexural strain as a dimensionless value. Both values must be positive numbers greater than zero.
Q1: What is the difference between flexural modulus and Young's modulus?
A: While both measure stiffness, flexural modulus specifically applies to bending deformation, whereas Young's modulus applies to tensile and compressive deformation.
Q2: What are typical flexural modulus values for common materials?
A: Values vary widely - metals typically have high flexural modulus (tens to hundreds of GPa), plastics range from 1-10 GPa, while rubbers and elastomers have much lower values.
Q3: How is flexural stress measured experimentally?
A: Typically through three-point or four-point bending tests where a specimen is loaded until deformation occurs, and stress-strain data is recorded.
Q4: What factors can affect flexural modulus measurements?
A: Temperature, humidity, testing speed, specimen geometry, and material anisotropy can all influence measured flexural modulus values.
Q5: When is flexural modulus more appropriate than tensile modulus?
A: Flexural modulus is particularly important for applications where materials will experience bending loads, such as beams, panels, and structural components.