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In transport, D-value is a rating in kN that is typically attributed to mechanical couplings, and reflects dynamic loading limits between a towing vehicle and a trailer. The corresponding formula for a truck and trailer combination, used to determine the required D-value of a coupling, is: T = Weight of towing vehicle including the vertical load on the fifth wheel R = Total weight of the loaded semi-trailer U = Vertical load on the fifth wheel g = Acceleration due to gravity (assumed to be 9.81 m/s 2 ) D (kN) = g x ((0.6 x T x R)/(T + R - U))〔(【引用サイトリンク】url=http://ww1.safholland.pl/quicklit/XL-FW01055SB-en-DE.pdf )〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「D-value (transport)」の詳細全文を読む スポンサード リンク
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