| axial stiffness | สติฟเนสแนวแกน |
| bending stiffness | สติฟเนสการดัด |
| reduced stiffness | สติฟเนสลดลง |
| relative stiffness | สติฟเนสสัมพัทธ์ |
| rotational stiffness | สติฟเนสเชิงหมุน |
| stiffness | สติฟเนส |
| stiffness method | วิธีสติฟเนส |
| Elastic energy: | (english) The energy stored in deformed elastic material (e.g., a watch spring). Elastic energy equals where k is the stiffness, and is the associated deflection. Elastic energy is sometimes called elastic potential energy because it can be recovered when the object returns to its original shape; see potential energy. |
| Flexibility: | (english) Flexibility is the inverse of stiffness. When a force is applied to a structure, there is a displacement in the direction of the force; flexibility is the ratio of the displacement divided by the force. High flexibility means that a small load produces a large displacement. |
| Stiffness: | (english) This is a general term which may be applied to materials or structures. When a force is applied to a structure, there is a displacement in the direction of the force; stiffness is the ratio of the force divided by the displacement. High stiffness means that a large force produces a small displacement. When discussing the stiffness of a material, the concept is the same, except that stress substitutes for force, and strain substitutes for displacement; see modulus of elasticity. |