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2024年4月15日发(作者：analyze的用法与搭配)
Suspension spring
悬架弹簧
Intriduction
介绍
In this chapter we will discuss ways to calculate(approximately)certain properties of
在这一章中我们将讨论如何计算（约）的某些特性
suspension system springs．We will concentrate on spring rate and maximum stress
but
弹簧悬挂系统。我们将集中在春季率和最大应力而
also touch OU problems associated with usage，i．e．，fatigue。The types of springs
covered
也抚摸你相关的问题与使用，即，类型的弹簧盖
will include torsion springs，coil springs，and leafsprings．
将包括扭力弹簧，螺旋弹簧，和leafsprings。
The material covered is insufficient for detailed design engineering calculations--for
that
材料覆盖是不够详细的工程计算，设计——
the reader will have to go to the literature，especially the referenced SAE design hand-
读者将要去的文学，尤其是汽车设计方面的参考—
books and spring manufacturers’handbooks．
书籍和弹簧manufacturers'handbooks。
21．1 Torsion Springs
21.1个扭转弹簧
In a torsion spring the elastic properties ofa long thin“bar'’in torsion(twist)is used to
在扭簧的弹性性能的细长的酒吧去扭转（扭曲）是用来
produce a rectilinear spring rate that is comparable to that era coil spring，The spring
产生直线弹簧率相比，时代的螺旋弹簧，弹簧
load or forceis usually converted to torque around the centerline of the bar by means
负载或forceis通常转化为扭矩围绕中心线的酒吧的手段
of a lever arm at one or both (anti-roll bar)ends．Figure 21．1 gives the basic geometry
of
杠杆臂的一个或两个（防侧倾杆）21.1给出了基本几何
a torsion spring．
扭转弹簧。
In practice the load is not always perpendicular to R throughout the entire twist angle
ex-
实际负载不总是垂直于在整个扭角前—
cursion．Thus，in precise engineering design calculations，twist angle correction
factors
cursion。因此，在精密工程设计计算，扭角校正因子
are iutrodueed(see Ref.7,for example)．
是iutrodueed（见ref.7，例如）。
The torsion bar itself may have any number of different cross sections，ranging from
the
扭杆本身可能有任何数量的不同截面，从
most widely used circular bar to an oval bar or a rectaugular bar．In these notes we
will
最广泛使用的圆棒椭圆形或矩形酒吧。我们将在这些笔记
focus ou the circular bar and the square bar。The configuration of the lever arm,R,is
not
重点区圆棒和棒。配置的杠杆臂，，不是
important insofar as stress，spring rate，etc．，are concerned；its only function is to
convert
重要的应力，弹簧率，等等，是有关；其唯一职能是转换
W into a torque(WR)around the centerline ofthe bar．Ifthe wheel load is applied di-
到扭矩（西铁）围绕中心的酒吧。如果车轮负载应用迪—
rectly at poin “a”the spring rate is also the wheel rate．
最近在点”“春季率也是轮率。
Maximum Stress
最大应力
When an external torque is applied to a torsion bar the resisting moment developed
can
当一个外部扭矩应用到扭杆抗时刻了
be expressed as a function ofthe bar's cross-sectional geometry and the maximum
shear
表示为一个函数的杆的横截面几何形状和最大剪应变
stress，ped in the bar．If we call the resisting moment M，we can find expres-
应力，ped在酒吧。我们呼吁抵制的时刻，我们可以找到表达—
sions for different bar cross sections in any good engineering handbook(for example，
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