ENGINEERING CALCULATORS
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Engineering calculators (Beta)
Compare energy per impact and repeated-duty mean power from impact speed, continuing drive force and absorption stroke.
Click the grid to add ordered vertices. Edit coordinates in mm; separate holes with a blank line. The last vertex closes to the first automatically.
Choose units and enter numbers. Full-width digits and fractions such as 1/8 or 1 3/8 are accepted. Changing a unit converts the entered value.
Reference calculation only. Results do not certify suitability for an actual design or its safety.
Inputs: select a blue symbol to edit Results: red-orange values and lines
3D shows an illustrative extrusion. Its display length does not enter the section calculations. Edit dimensions in 2D.
Ek=mv²/2; Wd=(Fd+qmg)s, q=0(horizontal), +1(down), −1(up); E=Ek+Wd; Favg=E/s; Pavg=E/tc; me=2E/v²; tstop≈2s/v.
Displayed values are rounded. Diagrams illustrate the calculation conditions. Initial material and fluid properties are examples; replace them with values for the actual material, temperature and conditions.
ReferenceEquations assume particular loads, supports and deformation ranges. Check inputs, units and the applicability of each equation. Diagrams explain conditions; they are not manufacturing drawings or proof of safety.
Material values are typical values or reference ranges, not certified product properties or ready-to-use design allowables. They vary with standards, product form, dimensions, temper and temperature. Check the specifications and inspection certificates for the actual product.
Displayed safety factors and checks apply only to the supplied inputs and calculation model. They do not automatically establish the safety of a complete design, including code compliance, service life, fatigue or joints. For actual design, manufacture and use, separately verify applicable regulations and standards, product specifications, and the necessary tests and engineering review.
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衝突速度、停止中も働く推力、吸収ストロークから、1回の吸収量と繰返しの平均動力を別々に比較します。
Ek=mv²/2; Wd=(Fd+qmg)s, q=0(horizontal), +1(down), −1(up); E=Ek+Wd; Favg=E/s; Pavg=E/tc; me=2E/v²; tstop≈2s/v.
接触後の直線運動を1個の緩衝器で止めるモデルです。入力vは接触開始時の速度で、落下開始時の速度ではありません。推力Fdは吸収中一定・進行方向とし、鉛直モードだけ重力の仕事を加減します。1回の吸収量と繰返し平均動力の両方を、実使用条件での製品上限と比較します。カタログがJ/minなら60で割るとW、J/hなら3600で割るとWです。入力上限は例で製品値ではありません。Favgはストローク平均であり、最大反力や取付部の設計荷重ではありません。等価質量、許容速度範囲、押付力、温度、復帰時間、寿命、機械的ストッパを別に確認します。上向きで指定距離まで到達しない場合や、周期が一定減速度の停止時間以下の場合は計算を停止します。
Compare energy per impact and repeated-duty mean power from impact speed, continuing drive force and absorption stroke.
Ek=mv²/2; Wd=(Fd+qmg)s, q=0(horizontal), +1(down), −1(up); E=Ek+Wd; Favg=E/s; Pavg=E/tc; me=2E/v²; tstop≈2s/v.
One absorber stopping linear motion after contact. v is speed at contact, not at the start of a fall. Fd is constant along motion; gravity work is added/subtracted only for vertical modes. Compare both single-impact energy and repeated mean power with product limits applicable to actual use. Divide J/min by 60, or J/h by 3600, to obtain W. Entered limits are examples, not product data. Favg is a stroke average, not peak reaction or mount design load. Check equivalent mass, permitted speed range, pushing force, temperature, reset time, life and mechanical stops separately. Reject upward cases that cannot reach the entered stroke and periods no greater than the constant-deceleration stopping-time estimate.
