CN106326592A - Design method for lightweight steel wheel - Google Patents

Abstract

The invention relates to a design method for a lightweight steel wheel. The design method includes the following steps that 1, a 3D digital model is established, and materials are selected; 2, the pretreatment process of finite element analysis is carried out in software, a simulation model is opened in WheelStrength software, loads are applied, and the maximum RFS value of a wheel spoke and the maximum RFS value of a rim are obtained; 3, a wheel spoke material and a rim material are detected, the actual yield strength of the wheel spoke and the actual yield strength of the rim are obtained, and the corresponding SK value is calculated; 4, the SK value is compared with the RFS value, a, when SK is smaller than RFS, if the SK value is far smaller than the RFS value, a material with the higher yield strength is selected and shifted into the step 3, the SK value is newly determined, then the step 4 is carried out, and otherwise, the structure of a wheel is modified, the step 2 is shifted into, and then the step 4 is carried out; b, when SK is larger than or equal to RF, if the SK value is far larger than the RFS value, a material with the lower yield strength is selected, the step 3 is shifted into, and then the step 4 is carried out, and otherwise, the design method is determined as the design scheme of the lightweight wheel.

Description

A kind of method for designing of Lightweight steel wheel

Technical field

The present invention relates to a kind of wheel, especially relate to the method for designing of a kind of Lightweight steel wheel.

Background technology

For steel wheel for tubeless tires, it is common that spoke and wheel rim two parts manufacture the knot then welded together respectively Structure；Due to the strength structure that the spoke of current steel wheel for tubeless tires is commonly used, the wheel rim of steel wheel for tubeless tires is then Designing also according to equal thickness structure, design cycle is realized by " design calculates (or experiment) amendment " repeatedly , there is the defect expending material, designing and developing efficiency deficiency, therefore inventors herein propose and each improve, the most entitled " one The Optimization Design of kind of automotive wheel Varying-thickness wheel rim " the improvement technology of (authorizing publication No.: CN102855359B), this improvement Optimized algorithm and CAD are modeled by technology, cae analysis is integrated, initially set up CAD parameterized model, cae analysis model, select tool Representational Cross section Design parameter is modeled analyzing, and these models are optimized by optimizer, finds optimum design ginseng Number value；Thus form wheel rim equal strength variable section structure, reduce quality and in turn ensure that intensity；Especially shorten product to open The time of sending out.But above-mentioned improvement technology yet suffers from some shortcomings, in actual production, enterprise often needs to design and develop multiple difference The wheel of specification, to meet different needs, the most different road conditions, wheel not Varying-thickness structure only according to wheel rim can With solve, and the lightweight contribution to wheel is overall is not enough.

Summary of the invention

Present invention is primarily intended to provide that one can be rapidly completed wheel entirety light-weight design, light weight effect is good, set The method for designing of the Lightweight steel wheel that meter efficiency is high.

The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of lightweight steel car The method for designing of wheel, it is characterised in that: comprise the following steps:

Step one, sets up the 3D digital-to-analogue of wheel；Select the material of spoke and wheel rim；

Step 2, carries out the pretreatment process of finite element analysis in software UG, including stress and strain model, the setting of boundary condition Fixed, derive phantom；Opening phantom, imposed load in WheelStrength software, setting the Wheel Fatigue life-span will Ask, carry out solving analysis, obtain the maximum RFS value of spoke and wheel rim；

Step 3, detects spoke material and rim material, draws the actual yield strength of spoke and wheel rim, calculates Corresponding S_KValue；Spoke S_KValue computing formula:

$S_{k,R=-1}=\frac{(0.436\·{\mathrm{\σ}}_{yield}+77MPa)}{1.32}$

Wheel rim S_KValue computing formula:

$S_{k,R=-1}=\frac{(0.436\·{\mathrm{\σ}}_{yield}+77MPa)}{1.65};$

Wherein, σ_yieldRefer to the actual yield strength of material；

Step 4, by spoke rim material S_KValue, contrasts with RFS value, selects as follows:

A, works as S_KDuring ＜ RFS, if S_KValue much smaller than RFS value, then selects the higher material of yield strength and proceeds to step 3 Redefine S_KEnter back into step 4 after value, otherwise revise the structure of wheel and proceed to step 2 and retrieve spoke and wheel rim Step 4 is entered back into after big RFS value；

B, as SK >=RFS, if S_KValue is much larger than RFS value, then selection yield strength is lower material also proceeds to step Three redefine S_KEnter back into step 4 after value, be otherwise defined as the design of lightweight wheel.

Therefore, there is advantages that by the structure of spoke wheel rim being carried out finite element analysis, and simultaneously Revise the yield strength of spoke rim material, be rapidly completed structure design；While meeting Vehicle Wheel Construction Strength, it is achieved wheel Integrally-built light-weight design, light weight effect is good, design efficiency is high.

Accompanying drawing explanation

Accompanying drawing 1 is the flow chart of the method for designing of a kind of Lightweight steel wheel of the present invention.

Detailed description of the invention

Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.

Embodiment: the method for designing of a kind of Lightweight steel wheel of the present invention, as shown in Figure 1, it comprises the following steps:

Step one, sets up the 3D digital-to-analogue of wheel；Select the material of spoke and wheel rim；

Step 2, carries out the pretreatment process of finite element analysis in software UG, including stress and strain model, the setting of boundary condition Fixed, derive phantom；Opening phantom, imposed load in WheelStrength software, setting the Wheel Fatigue life-span will Ask, carry out solving analysis, obtain the maximum RFS value of spoke and wheel rim；

Step 3, detects spoke material and rim material, draws the actual yield strength of spoke and wheel rim, calculates Corresponding S_KValue；Spoke S_KValue computing formula:

$S_{k,R=-1}=\frac{(0.436\·{\mathrm{\σ}}_{yield}+77MPa)}{1.32}$

Wheel rim S_KValue computing formula:

$S_{k,R=-1}=\frac{(0.436\·{\mathrm{\σ}}_{yield}+77MPa)}{1.65};$

Wherein, σ_yieldRefer to the actual yield strength of material；

Step 4, by spoke rim material S_KValue, contrasts with RFS value, selects as follows:

A, works as S_KDuring ＜ RFS, if S_KValue much smaller than RFS value, then selects the higher material of yield strength and proceeds to step 3 Entering back into step 4 after redefining Sk value, the structure otherwise revising wheel i.e. revises the 3D digital-to-analogue of wheel, proceeds to step double Step 4 is entered back into after the maximum RFS value of newly obtained spoke and wheel rim；Described S_KIt is worth and is much smaller than RFS, such as 1/2nd.

B, works as S_KDuring >=RFS, if SK value is much larger than RFS value, then selection yield strength is lower material also proceeds to step Three redefine Sk value after enter back into step 4, be otherwise defined as the design of lightweight wheel.Described S_KValue is much larger than RFS, such as twice.

Such as, the wheel of product specification 22.5 × 9.00, determine the S of spoke and wheel rim_KDivide with Wheelstrength software The result of analysis RFS value:

Claims (1)

1. the method for designing of a Lightweight steel wheel, it is characterised in that: comprise the following steps:

Step one, sets up the 3D digital-to-analogue of wheel；Select the material of spoke and wheel rim；

Step 2, carries out the pretreatment process of finite element analysis in software UG, including stress and strain model, the setting of boundary condition, Derive phantom；In WheelStrength software, open phantom, imposed load, set the Wheel Fatigue life-span, carry out Solve analysis, obtain the maximum RFS value of spoke and wheel rim；

Step 3, detects spoke material and rim material, draws the actual yield strength of spoke and wheel rim, calculates corresponding S_KValue；Spoke value computing formula:

$S_{k,R=-1}=\frac{\left(0.436\·{\mathrm{\σ}}_{yield}+77MPa\right)}{1.32}$

Wheel rim S_KValue computing formula:

$S_{k,R=-1}=\frac{\left(0.436\·{\mathrm{\σ}}_{yield}+77MPa\right)}{1.65};$

Wherein, σ_yieldRefer to the actual yield strength of material；

Step 4, by spoke rim material S_KValue, contrasts with RFS value, selects as follows:

A, works as S_KDuring ＜ RFS, if S_KValue much smaller than RFS value, then selects the higher material of yield strength and proceeds to step 3 again Enter back into step 4 after determining Sk value, otherwise revise the structure of wheel and proceed to step 2 and retrieve the maximum of spoke and wheel rim Step 4 is entered back into after RFS value；

B, works as S_KDuring >=RFS, if S_KValue is much larger than RFS value, then selection yield strength is lower material also proceeds to step 3 again Enter back into step 4 after determining Sk value, be otherwise defined as the design of lightweight wheel.