The unloading curve normally falls below the loading curve to form a hysteresis loop . 卸載曲線通常都落在加載曲線之下,形成一個(gè)滯后回線。
Upon unloading at any state in the deformation, the strain does not retrace the loading curve but is reduced along an elastic unloading line . 在變形的任一階段卸載時(shí),應(yīng)變都不按加載曲線返回,而是沿著彈性卸載曲線下降。
Monthly load curve 月負(fù)載曲線
Annual load curve 年負(fù)荷曲線
It is shown that permitted load curve must be implemented in choosing crank press 在選用壓力機(jī)時(shí),必須嚴(yán)格按照許用負(fù)荷曲線圖來選擇。