Fjærer

Fjærer, also known as "springs" in English, are mechanical devices typically designed to store and release energy. They are usually made of elastic materials, most commonly steel, though other materials like bronze, plastic, and rubber can also be used. The primary function of a spring is to exert a force proportional to its displacement from its equilibrium position, a principle described by Hooke's Law.

There are numerous types of fjærer, each designed for specific applications. Coil springs, perhaps the most common, are formed by winding a wire into a helical shape. These can be further categorized into compression springs, which shorten under load, and extension springs, which lengthen. Torsion springs, on the other hand, are designed to resist twisting or torsional forces. Leaf springs, often found in vehicle suspensions, are made of several flat strips of metal layered together. Belleville washers, also known as disc springs, are ring-shaped components that provide a compact and high-force spring solution.

Fjærer are integral components in a vast array of applications. They are essential in vehicles for suspension systems, providing a smoother ride and absorbing shocks. In furniture, they contribute to comfort and support. Everyday items like pens, door hinges, and clocks also utilize fjærer. In industrial machinery, they play roles in dampening vibrations, actuating mechanisms, and maintaining tension or pressure. The precise design and material of a fjær are critical to its performance and longevity, with factors like stiffness, load capacity, and fatigue life being carefully considered during engineering.