The phrase "acceptable stiffness" is correct and usable in written English.
It can be used in contexts where you are discussing the degree of rigidity or firmness that is considered satisfactory for a particular application or material.
Example: "The material must have an acceptable stiffness to ensure it can withstand the required loads without deforming."
Alternatives: "satisfactory rigidity" or "suitable firmness."
Due to the employment of compliant elements, these mechanisms cannot sufficiently maintain acceptable constraint stiffness level in the entire range of motion.
It was discovered that using only the maximum compressive strength as an erosion criterion is not acceptable because the stiffness of the structure is highly decreased when the element is deleted, in other words, the stiffness of elements in the softening part is neglected.
The modular frame had acceptable strength and stiffness within fortified intensity shake earthquake levels, and it satisfied ductility requirements without much structural failure.
If a 5% average uncertainty in system responses is acceptable, the cornering stiffness parameters must be estimated within 25% of actual/nominal values.
The results indicate that the macroscopic wall with moderate connection stiffness has acceptable consistency in terms of static and dynamic responses of the microscopic model.
The maps will reveal the existence of zones where the stiffness is not acceptable and will also help the designer by proving a more accurate representation of the properties of the manipulator.
The results show that Nano Fe2O3 can improve the mechanical properties of stone mastic asphalt to an acceptable level so that the stiffness modulus of the mixtures have improved due to using nano-material and the mixtures strength is also enhanced against the fatigue.
This is why we suggested that Hooke's stiffness is more acceptable for measurements with short indentation depths, such as those used in our study.
Indeed, both stiffness models yield very acceptable results for a static analysis.
In addition, the mechanical values for ultimate tensile strength and stiffness were in an acceptable range for in vivo applications.
