CN106382312B - The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end - Google Patents

The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end Download PDF

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Publication number
CN106382312B
CN106382312B CN201610906961.8A CN201610906961A CN106382312B CN 106382312 B CN106382312 B CN 106382312B CN 201610906961 A CN201610906961 A CN 201610906961A CN 106382312 B CN106382312 B CN 106382312B
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spring
flat
root
type band
camber
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CN106382312A (en
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周长城
邵明磊
于曰伟
王凤娟
杨腾飞
汪晓
赵雷雷
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Shandong University of Technology
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Shandong University of Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/185—Leaf springs characterised by shape or design of individual leaves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/022—Springs leaf-like, e.g. of thin, planar-like metal

Abstract

The present invention relates to the design methods of few piece both ends Enhanced type band spring camber of the non-grade structures in end, belong to suspension leaf spring technical field.The present invention can be designed according to the structural parameters of each flat spring, elasticity modulus, rated load and the remaining tangent line camber design requirement value under rated load, the initial tangential camber of few piece both ends Enhanced type band spring of grade structures non-to end.It is tested by model machine deformation under load test, the design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end provided by the present invention is correct, reliable technical foundation has been established in available accurately and reliably initial tangential camber design value, the design and CAD software exploitation of few piece both ends Enhanced type band spring for the non-grade structures in end.Horizontal product design, quality and performance and vehicle ride performance can be improved using this method, meanwhile, product design and experimental test expense are reduced, accelerates product development speed.

Description

The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end
Technical field
The present invention relates to the non-few piece both ends Enhanced type band spring arcs for waiting structures in vehicle suspension leaf spring, particularly end High design method.
Background technology
With vehicle energy saving, comfortableization, lightweight, the fast development of safe, few piece variable-section steel sheet spring is because of tool There is the advantages that light-weight, stock utilization is high, small without rubbing or rubbing between piece, and vibration noise is low, and service life is long, be increasingly subject to The highest attention of vehicle suspension expert, manufacturing enterprise and vehicle manufacture enterprise, and obtained extensively in vehicle suspension system Using.It, can be by few piece Variable Section Steel generally for the design requirement for meeting processing technology, stress intensity, rigidity and lifting lug thickness Flat spring is processed as the different structures forms such as reinforced parabolic type, bias type, root, reinforcement end, both ends are reinforced, this Outside, since the stress of few the 1st flat spring of piece variable-section steel sheet spring is complex, it is subjected to vertical load, while also subject to Torsional load and longitudinal loading, therefore, the thickness and length of the end flat segments of the 1st flat spring designed by reality, more than it The thickness and length of his each flat spring end flat segments mostly use the non-few piece variable-section steel sheet spring for waiting structures in end, with Meet the requirement of the 1st flat spring stress complexity.However, due to the reinforced few piece variable-section steel sheet spring in both ends structure type compared with For complexity, analyze it calculate it is extremely difficult, according to consulting reference materials it is found that not provided reliable end always both at home and abroad at present The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in portion.It is wanted with Vehicle Speed and its to ride comfort The continuous improvement asked, the few piece both ends Enhanced type band spring for waiting structures non-to end proposes higher requirement, therefore, it is necessary to build A kind of vertical accurate, few piece both ends Enhanced type band spring camber of structures such as reliable end is non-design method is that end is non-etc. Reliable technical foundation is established in the camber design of few piece both ends Enhanced type band spring of structure, meet Vehicle Industry it is fast-developing, The design requirement of the few piece both ends Enhanced type band spring for the structures such as vehicle ride performance and end are non-, improves product design water Flat, quality and performance meet the design requirement of vehicle ride performance；Meanwhile design and testing expenses are reduced, accelerate product and open Send out speed.
Invention content
Defect present in for the above-mentioned prior art, the technical problems to be solved by the invention be to provide it is a kind of it is easy, The design method of few piece both ends Enhanced type band spring camber of the reliable non-grade structures in end, design flow diagram, such as Fig. 1 institutes Show.The half symmetrical structure of few reinforced variable-section steel sheet spring in piece both ends can see Cantilever Beams of Variable Cross Section as, will symmetrically in Heart line sees the root fixing end of half spring as, sees spring end stress point as spring endpoint.End is non-to wait lacking for structures The half symmetrical structure schematic diagram of the reinforced variable-section steel sheet spring in piece both ends, as shown in Fig. 2, including, spring 1, root Gasket 2, end pad 3；The half length of 1 each, spring is LM, it is by root flat segments, root oblique line section, parabolic segment, end Five sections of compositions of portion's oblique line section and end flat segments；Root oblique line section plays variable cross-section root booster action, and end oblique line section is to becoming Play booster action in section end；The thickness of each flat spring root flat segments is h2M, the end thickness of each flat spring root oblique line section h2Mp, each flat spring clipping room away from half length be l3, the length of 1 each root oblique line section of spring is Δ l2, each flat spring root The root of portion's oblique line section is to the distance l of spring endpoint2M=LM-l3, the distance l of each flat spring parabola root to spring endpoint2Mp =LM-l3-Δl2, the thickness ratio γ of each flat spring root oblique line sectionM=h2Mp/h2M, the end thickness of each flat spring parabolic segment For h1Mpi, i.e., the thickness ratio β of each flat spring parabolic segmenti=h1Mpi/h2Mp, i=1,2 ..., N, N is number of spring leaf, each flat spring The end of parabolic segment is to the distance l of spring endpoint1Mpi=l2Mβi 2；The length of 1 each end oblique line section of spring is Δ l1, each The end of spring is different, the i.e. thickness and length of the 1st flat spring end flat segments, straight more than other each flat spring ends The thickness and length of section, the thickness and length of each flat spring end flat segments are respectively h1MiAnd l1Mi=l1Mpi-Δl1；Each The thickness ratio μ of spring end oblique line sectionMi=h1Mi/h1Mpi, the initial tangential camber of each flat spring is Hci.The root that spring is 1 each Root shim 2 is equipped between flat segments, end pad 3, the material of end pad are equipped between the end flat segments of 1 each, spring For carbon fibre composite, to reduce frictional noise caused by spring works.Structural parameters, springform in each flat spring Amount, rated load and the remaining tangent line camber design requirement value under rated load give, non-to end that structures is waited to lack The initial tangential camber of piece both ends Enhanced type band spring is designed.
In order to solve the above technical problems, the non-few piece both ends Enhanced type band spring arc for waiting structures in end provided by the present invention High design method, it is characterised in that use following design procedure：
(1) each flat spring endpoint deformation coefficient G of both ends Enhanced type band spring under endpoint stressing conditionsx-FiCalculating：
According to the half length L of few reinforced variable-section steel sheet spring in piece both endsM, width b, clipping room away from half l3, root Portion oblique line segment length Δ l2, end oblique line segment length Δ l1, the distance l of the root of root oblique line section to spring endpoint2M, parabola Root is to the distance l of spring endpoint2Mp, the thickness ratio γ of root oblique line sectionM, the thickness ratio β of the parabolic segment of the i-th flat springi, In, i=1,2 ..., N, N is number of spring leaf, the thickness ratio μ of the end oblique line section of the i-th flat springMi, the end of the i-th flat spring is oblique The root of line segment is to the distance l of spring endpoint1Mpi, the distance of the end of the end oblique line section of the i-th flat spring to spring endpoint l1Mi, elastic modulus E, to deformation coefficient G of each flat spring under endpoint stressing conditions at endpointx-FiIt is calculated, i.e.,
(2) End Force F suffered by the both ends Enhanced type band spring head flat springs under rated load1Calculating：
I steps：According to the root thickness h of few reinforced variable-section steel sheet spring in piece both ends2MAnd it is calculated in step (1) The G arrivedx-Fi, determine the half stiffness K of each flat spring in the clamp stateMi, i.e.,
Wherein, i=1,2 ..., N, N are number of spring leaf；
II steps：Half rated load P, number of spring leaf N according to suffered by few reinforced variable-section steel sheet spring in piece both ends, And identified K in I stepsMi, to the end suffered by the reinforced variable-section steel sheet spring head flat springs in both ends under rated load Power F1It is calculated, i.e.,
(3) the both ends Enhanced type band spring Leading Edge Deformation f under rated loadFCalculating：
According to K determined by I steps in step (2)M1And identified F in II steps1, to the steel plate under rated load The Leading Edge Deformation f of springFIt is calculated, i.e.,
(4) design of few piece both ends Enhanced type band spring initial tangential camber of the non-grade structures in end：
According to the remaining tangent line camber design requirement value H under rated loadmAnd the f being calculated in step (3)F, determine The initial tangential camber of each flat spring, i.e.,
Hci=Hm+fF；
Wherein, i=1,2 ..., N, N are number of spring leaf.
The present invention has the advantage that than the prior art
Since the structure type of the reinforced few piece variable-section steel sheet spring in both ends is complex, it is non-to analyze it calculating It is often difficult, according to consulting reference materials it is found that not provided the non-few piece both ends for waiting structures in reliable end always both at home and abroad at present reinforced The design method of leaf spring camber.The present invention can be according to the structural parameters of each flat spring, elasticity modulus, rated load and in volume Determine the remaining tangent line camber design requirement value under load, the initial of few piece both ends Enhanced type band spring for waiting structures non-to end cuts Bank height is designed.It is tested by model machine deformation under load test it is found that the non-few piece two for waiting structures in end provided by the present invention The design method of end Enhanced type band spring camber is correct, can obtain accurately and reliably initial tangential camber design value, is Reliable technical foundation has been established in the design and CAD software exploitation of few piece both ends Enhanced type band spring of the non-grade structures in end；Together When, using this method, horizontal product design, product quality and vehicle ride performance can be improved；Meanwhile can also reduce design and Experimental test expense accelerates product development speed.
Description of the drawings
For a better understanding of the present invention, it is described further below in conjunction with the accompanying drawings.
Fig. 1 is the design flow diagram of the reinforced variable-section steel sheet spring camber in few piece both ends of the non-grade structures in end；
Fig. 2 is the structure diagram of the half of few reinforced variable-section steel sheet spring in piece both ends of the non-grade structures in end.
Specific embodiment
The present invention is described in further detail below by embodiment.
Embodiment one：The piece number N=2 of certain few reinforced variable-section steel sheet spring in piece both ends, wherein, the half of each flat spring Length LM=575mm, width b=60mm, the thickness h of root flat segments2M=11mm, the end thickness h of root oblique line section2Mp= 10.20mm, clipping room away from half l3=55mm, the length Δ l of root oblique line section2=30mm, the length Δ l of end oblique line section1 =30mm, the distance l of the root of root oblique line section to spring endpoint2M=LM-l3=520mm, the root of parabolic segment to spring The distance l of endpoint2Mp=LM-l3-Δl2=490mm, elastic modulus E=200GPa, the thickness of the root oblique line section of each flat spring Compare γM=h2Mp/h2M=0.93；The end thickness h of the parabolic segment of 1st flat spring1Mp1The thickness ratio of=6mm, i.e. parabolic segment β1=h1Mp1/h2M=0.55, the distance l of the end of parabolic segment to spring endpoint1Mp1=l2Mβ1 2=148.23mm, end are straight The thickness h of section1M1The thickness ratio μ of=7mm, i.e. end oblique line sectionM1=h1M1/h1Mp1=1.17, the length l of end flat segments1M1= l1Mp1-Δl1=118.23mm；The end thickness h of the parabolic segment of 2nd flat spring1Mp2The thickness ratio of=5mm, i.e. parabolic segment β2=h1Mp2/h2M=0.45, the distance l of the end of parabolic segment to spring endpoint1Mp2=l2Mβ2 2=99.23mm, end are straight The thickness h of section1M2The thickness ratio μ of=6mm, i.e. end oblique line sectionM2=h1M2/h1Mp2=1.20, the length l of end flat segments1M2= l1Mp2-Δl1=69.23mm.The half P=1900N of the spring rated load, remaining tangent line of the leaf spring under rated load Camber design requirement value Hm=26mm, the camber of few piece both ends Enhanced type band spring of grade structures non-to the end are designed.
The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end that present example is provided, Design cycle is as shown in Figure 1, be as follows：
(1) each flat spring endpoint deformation coefficient G of both ends Enhanced type band spring under endpoint stressing conditionsx-FiCalculating：
According to the half length L of few reinforced variable-section steel sheet spring in piece both endsM=575mm, width b=60mm, installation The half l of spacing3=55mm, root oblique line segment length Δ l2=30mm, end oblique line segment length Δ l1=30mm, root oblique line Section root to spring endpoint distance l2M=520mm, the distance l of parabola root to spring endpoint2Mp=490mm, root are oblique The thickness ratio γ of line segmentMThe thickness ratio β of the parabolic segment of=0.93, the 1st flat spring1The parabolic segment of=0.55, the 2nd flat spring Thickness ratio β2The thickness ratio μ of the end oblique line section of=0.45, the 1st flat springM1The end oblique line section of=1.17, the 2nd flat spring Thickness ratio μM2The root of the end oblique line section of=1.20, the 1st flat spring is to the distance l of spring endpoint1Mp1=148.23mm, the The root of the end oblique line section of 2 flat springs is to the distance l of spring endpoint1Mp2=99.23mm, the end oblique line section of the 1st flat spring End to spring endpoint distance l1M1=118.23mm, the end of the end oblique line section of the 2nd flat spring to spring endpoint away from From l1M2=69.23mm, elastic modulus E=200GPa, to the 1st under endpoint stressing conditions, the 2nd flat spring at endpoint Deformation coefficient Gx-F1、Gx-F2It is calculated, i.e.,
(2) End Force F suffered by the both ends Enhanced type band spring head flat springs under rated load1Calculating：
I steps：According to the root thickness h of few reinforced variable-section steel sheet spring in piece both ends2MIn=11mm and step (1) The G being calculatedx-F1=103.44mm4/N、Gx-F2=108.17mm4/ N, determine the 1st, the 2nd flat spring in the clamp state Half stiffness KM1、KM2, i.e.,
II steps：According to the half rated load P=1900N suffered by few reinforced variable-section steel sheet spring in piece both ends, bullet Identified K in reed number N=2 and I stepM1=12.87N/mm, KM2=12.30N/mm adds the both ends under rated load End Force F suffered by strong type variable-section steel sheet spring head flat springs1It is calculated, i.e.,
(3) the both ends Enhanced type band spring Leading Edge Deformation f under rated loadFCalculating：
According to K determined by I steps in step (2)M1Identified F in=12.87N/mm and II steps1= 971.51N, to the Leading Edge Deformation f of the leaf spring under rated loadFIt is calculated, i.e.,
(4) design of few piece both ends Enhanced type band spring initial tangential camber of the non-grade structures in end：
According to the remaining tangent line camber design requirement value H under rated loadmThe f being calculated in=26mm and step (3)F =75.49mm determines the initial tangential camber of each flat spring, i.e.,
Hc1=Hm+fF=101.49mm；
Hc2=Hm+fF=101.49mm.
By prototype test test it is found that the tangent line camber design value of spring is reliable, the non-grade structures in end can be met The design requirement of few remaining tangent line camber of the piece both ends Enhanced type band spring under rated load, the results showed that the invention is carried The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end of confession is correct, and parameter design value is accurate Reliably.
Embodiment two：The piece number N=2 of certain few reinforced variable-section steel sheet spring in piece both ends, wherein, the half of each flat spring Length LM=600mm, width b=60mm, the thickness h of root flat segments2M=12mm, the end thickness h of root oblique line section2Mp= 11mm, clipping room away from half l3=60mm, the length Δ l of root oblique line section2=30mm, the length Δ l of end oblique line section1= 30mm, the distance l of the root of root oblique line section to spring endpoint2M=LM-l3=540mm, the root of parabolic segment to spring terminal The distance l of point2Mp=LM-l3-Δl2=510mm, elastic modulus E=200GPa, the thickness ratio of the root oblique line section of each flat spring γM=h2Mp/h2M=0.92；The end thickness h of the parabolic segment of 1st flat spring1Mp1The thickness ratio β of=7mm, i.e. parabolic segment1 =h1Mp1/h2M=0.58, the distance l of the end of parabolic segment to spring endpoint1Mp1=l2Mβ1 2=171.56mm, end flat segments Thickness h1M1The thickness ratio μ of=8mm, i.e. end oblique line sectionM1=h1M1/h1Mp1=1.14, the length l of end flat segments1M1= l1Mp1-Δl1=141.56mm；The end thickness h of the parabolic segment of 2nd flat spring1Mp2The thickness ratio of=6mm, i.e. parabolic segment β2=h1Mp2/h2M=0.50, the distance l of the end of parabolic segment to spring endpoint1Mp2=l2Mβ2 2=127.50mm, end are straight The thickness h of section1M2The thickness ratio μ of=7mm, i.e. end oblique line sectionM2=h1M2/h1Mp2=1.17, the length l of end flat segments1M2= l1Mp2-Δl1=97.50mm.The half P=2100N of the spring rated load, remaining tangent line of the leaf spring under rated load Camber design requirement value Hm=28mm, the camber of few piece both ends Enhanced type band spring of grade structures non-to the end are designed.
Using the design method and step identical with embodiment one, the reinforced variable-section steel sheet spring in piece both ends is lacked to this Camber is designed, and is as follows：
(1) each flat spring endpoint deformation coefficient G of both ends Enhanced type band spring under endpoint stressing conditionsx-FiCalculating：
According to the half length L of few reinforced variable-section steel sheet spring in piece both endsM=600mm, width b=60mm, installation The half l of spacing3=60mm, root oblique line segment length Δ l2=30mm, end oblique line segment length Δ l1=30mm, root oblique line Section root to spring endpoint distance l2M=540mm, the distance l of parabola root to spring endpoint2Mp=510mm, root are oblique The thickness ratio γ of line segmentMThe thickness ratio β of the parabolic segment of=0.92, the 1st flat spring1The parabolic segment of=0.58, the 2nd flat spring Thickness ratio β2The thickness ratio μ of the end oblique line section of=0.50, the 1st flat springM1The end oblique line section of=1.14, the 2nd flat spring Thickness ratio μM2The root of the end oblique line section of=1.17, the 1st flat spring is to the distance l of spring endpoint1Mp1=171.56mm, the The root of the end oblique line section of 2 flat springs is to the distance l of spring endpoint1Mp2=127.50mm, the end oblique line section of the 1st flat spring End to spring endpoint distance l1M1=141.56mm, the end of the end oblique line section of the 2nd flat spring to spring endpoint away from From l1M2=97.50mm, elastic modulus E=200GPa, to the 1st under endpoint stressing conditions, the 2nd flat spring at endpoint Deformation coefficient Gx-F1、Gx-F2It is calculated, i.e.,
(2) End Force F suffered by the both ends Enhanced type band spring head flat springs under rated load1Calculating：
I steps：According to the root thickness h of few reinforced variable-section steel sheet spring in piece both ends2MIn=12mm and step (1) The G being calculatedx-F1=118.26mm4/N、Gx-F2=123.13mm4/ N, determine the 1st, the 2nd flat spring in the clamp state Half stiffness KM1、KM2, i.e.,
II steps：According to the half rated load P=2100N suffered by few reinforced variable-section steel sheet spring in piece both ends, bullet Identified K in reed number N=2 and I stepM1=14.61N/mm, KM2=14.03N/mm adds the both ends under rated load End Force F suffered by strong type variable-section steel sheet spring head flat springs1It is calculated, that is, i.e.
(3) the both ends Enhanced type band spring Leading Edge Deformation f under rated loadFCalculating：
According to K determined by I steps in step (2)M1Identified F in=14.61N/mm and II steps1= 1071.30N, to the Leading Edge Deformation f of the leaf spring under rated loadFIt is calculated, i.e.,
(4) design of few piece both ends Enhanced type band spring initial tangential camber of the non-grade structures in end：
According to the remaining tangent line camber design requirement value H under rated loadmThe f being calculated in=28mm and step (3)F =73.33mm determines the initial tangential camber of each flat spring, i.e.,
Hc1=Hm+fF=101.33mm；
Hc2=Hm+fF=101.33mm.
By prototype test test it is found that the tangent line camber design value of spring is reliable, the non-grade structures in end can be met The design requirement of few remaining tangent line camber of the piece both ends Enhanced type band spring under rated load, the results showed that the invention is carried The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end of confession is correct, and parameter design value is accurate Reliably.

Claims (1)

1. the design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end, wherein, the non-few piece for waiting structures in end The half symmetrical structure of the reinforced variable-section steel sheet spring in both ends is oblique by root flat segments, root oblique line section, parabolic segment, end 5 sections of compositions of line segment and end flat segments, are equipped with a root oblique line section, to variable cross-section steel plates between root flat segments and parabolic segment Play booster action in the root of spring；One end oblique line section is equipped between parabolic segment and end flat segments, to variable cross-section steel plates bullet Play booster action in the end of spring；The non-thickness and length for waiting structures, i.e. the 1st flat spring end flat segments in end of each flat spring, greatly In the thickness and length of other each flat spring end flat segments, to meet the requirement of the 1st flat spring complicated applied force；In each flat spring Structural parameters, elasticity modulus, rated load and the remaining tangent line camber design requirement value under rated load give, The initial tangential camber of few piece both ends Enhanced type band spring of the structures such as non-to end is designed, it is characterised in that using following Specific design procedure：
(1) each flat spring endpoint deformation coefficient G of both ends Enhanced type band spring under endpoint stressing conditionsx-FiCalculating：
According to the half length L of few reinforced variable-section steel sheet spring in piece both endsM, width b, clipping room away from half l3, root is oblique Line segment length Δ l2, end oblique line segment length Δ l1, the distance l of the root of root oblique line section to spring endpoint2M, parabola root To the distance l of spring endpoint2Mp, the thickness ratio γ of root oblique line sectionM, the thickness ratio β of the parabolic segment of the i-th flat springi, wherein, i =1,2 ..., N, N are number of spring leaf, the thickness ratio μ of the end oblique line section of the i-th flat springMi, the end oblique line section of the i-th flat spring Root to spring endpoint distance l1Mpi, the distance l of the end of the end oblique line section of the i-th flat spring to spring endpoint1Mi, bullet Property modulus E, to deformation coefficient G of each flat spring under endpoint stressing conditions at endpointx-FiIt is calculated, i.e.,
(2) End Force F suffered by the both ends Enhanced type band spring head flat springs under rated load1Calculating：
I steps：According to the root thickness h of few reinforced variable-section steel sheet spring in piece both ends2MAnd be calculated in step (1) Gx-Fi, determine the half stiffness K of each flat spring in the clamp stateMi, i.e.,
Wherein, i=1,2 ..., N, N are number of spring leaf；
II steps：According to the half rated load P suffered by few reinforced variable-section steel sheet spring in piece both ends, number of spring leaf N and I Identified K in stepMi, to the End Force F suffered by the reinforced variable-section steel sheet spring head flat springs in both ends under rated load1 It is calculated, i.e.,
(3) the both ends Enhanced type band spring Leading Edge Deformation f under rated loadFCalculating：
According to K determined by I steps in step (2)M1And identified F in II steps1, to the leaf spring under rated load Leading Edge Deformation fFIt is calculated, i.e.,
(4) design of few piece both ends Enhanced type band spring initial tangential camber of the non-grade structures in end：
According to the remaining tangent line camber design requirement value H under rated loadmAnd the f being calculated in step (3)F, determine each The initial tangential camber of spring, i.e.,
Hci=Hm+fF；
Wherein, i=1,2 ..., N, N are number of spring leaf.
CN201610906961.8A 2016-10-18 2016-10-18 The design method of few piece both ends Enhanced type band spring camber of the non-grade structures in end Expired - Fee Related CN106382312B (en)

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