CN104460339A - Active load spectrum control method used for designing automobile transmission structures in lightweight mode - Google Patents
Active load spectrum control method used for designing automobile transmission structures in lightweight mode Download PDFInfo
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- CN104460339A CN104460339A CN201410580217.4A CN201410580217A CN104460339A CN 104460339 A CN104460339 A CN 104460339A CN 201410580217 A CN201410580217 A CN 201410580217A CN 104460339 A CN104460339 A CN 104460339A
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Abstract
The invention relates to an active load spectrum control method used for designing automobile transmission structures in a lightweight mode. According to the method, an automobile standard drive cycle is used for endowing a load spectrum corresponding to the drive cycle to transmission system parts in advance, then on the basis of the low-load intensification characteristic of material, through adjusting the design sizes of the parts, the ratio of intensification loads to damage loads in the load spectrum is designed and adjusted, namely, active load spectrum control is achieved, the expected optimal working stress section of the parts is searched for, the optimal intensification effect of the load spectrum is achieved, and within set durability mileage, the most economical and reasonable intensification level of the parts is achieved. The active load spectrum control method is used for designing the parts in an automobile transmission system, because the load spectrum does not exist before designing, the load spectrum of the parts is actively designed according to the characteristics of the material and load intensification and damage characteristics, and therefore bases are provided for designing and evaluating the parts in the lightweight mode with the load spectrum as the basis.
Description
Technical field
The present invention relates to a kind of load Element Design method, particularly a kind of active loading spectrum control method for vehicle transmission structure light-weight design.
Background technology
Domestic, loading spectrum technology is started late, and does not form the loading spectrum establishment theoretical system of system perfecting.The existing research to loading spectrum mostly for vehicle torture test, and have not been reported for the method according to loading spectrum design parts.Because the loading spectrum of the parts such as vehicle drive system middle gear, axle, casing is difficult to measure, domestic current employing remain traditional Method of Design-by-Analogy, namely rely on experience to give the higher safety coefficient of whole power drive system and carry out project organization size, then check the intensity of design elements with permissible stress.Although have employed the method according to loading spectrum design elements intensity to vehicle structure abroad, but be still that passive foundation loading spectrum designs, i.e. basis or reference like parts load character before design, the step of Curve guide impeller completes---to survey spectrum---according to product primary design.To vehicle drive system type component, mainly by measuring the loading spectrum of housing and output shaft, being analyzed improvement, being estimated the load of the parts such as gear, axle, casing, then according to load design design of part, checked intensity afterwards, final optimization pass design of part.So such design, still needs cost considerable time Improvement and perfection, have impact on construction cycle and the market respond rhythm of product.
Summary of the invention
The present invention be directed to the structure lightened problem designing and developing time length of vehicle drive system type component, propose a kind of active loading spectrum control method for vehicle transmission structure light-weight design, car gage road is utilized to circulate, a loading spectrum corresponding with this circulation is given in advance to Parts for Power Train, again based on the low load reinforcing property of material, by adjusting the design size of these parts, design and regulate the ratio (initiatively loading spectrum control) of strengthening and damage load in loading spectrum, between the best effort stressed zone that searching part is expected, form the best strengthening effect of loading spectrum, under the permanance mileage of setting, obtain the most economical rational strength level of part.
Technical scheme of the present invention is: a kind of active loading spectrum control method for vehicle transmission structure light-weight design, first carries out loading spectrum signature analysis according to the strength characteristics of part material, obtains distributing between the load zones under the required life-span; Then adjust load position, optimize strengthening load and damage load proportion, set up part stress spectra and expect distributed model; Expect that distributed model carries out accessory size structural design according to part stress spectra; Fail-safe analysis is carried out to design of part after design, if meet given permanance mileage, terminates design; Otherwise, readjust and optimize strengthening load and damage load proportion, find between best effort load zones, adjustment Element Design structure.
The strength characteristics of described part material carries out loading spectrum signature analysis: according to the part that will design, and selected material, determines S-N Curve; Carry out the analysis of strength of materials variation characteristic; Determine given permanance mileage N lower fatigue lifetime.
Described part stress spectra of setting up expects distributed model: carry out interval to distribution between the load zones corresponding to fatigue lifetime N and differentiate, the load that strengthened and damage between load zones; Adjustment strengthening load and the ratio of damage load, determine between part best effort load zones; The optimum stress scope that regulation is expected; Set up part stress spectra and expect distributed model.
Beneficial effect of the present invention is: the present invention is used for the active loading spectrum control method of vehicle transmission structure light-weight design, the present invention is used for the exploitation of part in vehicle drive system, loading spectrum is lacked before exploitation, according to material behavior, load strengthening and damage feature, active designs part loading spectrum, for the light-weight design of part based on loading spectrum and evaluation provide basis.
Accompanying drawing explanation
Fig. 1 is distribution and the Controlling model figure of load of the present invention;
Fig. 2 is the present invention's initiatively loading spectrum control flow chart.
Embodiment
As distribution and Controlling model that Fig. 1 is shown load of the present invention, traditional passive foundation loading spectrum design is upgraded to active designs loading spectrum, first loading spectrum signature analysis is carried out according to the strength characteristics of part material, then by Reasonable adjustment load position, optimize strengthening load and damage load proportion, set up the part best effort stress distribution characteristic model expected, finally determine Element Design loading spectrum.
Initiatively as shown in Figure 2, step is as follows: 1, according to the part that will design, and selected material, determines S-N Curve for loading spectrum control flow chart; 2, the analysis of strength of materials variation characteristic is carried out; 3, given permanance mileage N lower fatigue lifetime is determined; 4, carry out interval to distribution between the load zones corresponding to life-span N to differentiate, between the load that strengthened and damage load zones; 5, adjustment strengthening load and the ratio of damage load, determine between part best effort load zones; 6, the optimum stress scope of regulation expectation; 7, set up part stress spectra and expect distributed model; 8, according to expecting stress spectra, design elements dimensional parameters; 9, carry out design of part fail-safe analysis, if meet given permanance mileage, the stress spectra model expected can be determined, end task; Otherwise, come back to step 5, continue to optimize strengthening load and damage load proportion, find between best effort load zones.
The present invention is by the quantity of strengthening circulation and impaired circulation in ACTIVE CONTROL loading spectrum, and the damage that in COMPREHENSIVE CALCULATING life cycle, large load causes and the strengthening that side crops industry causes, when ensureing that the permanance mileage of regulation reaches, the strength potential of part is not fully exerted.
Claims (3)
1. for an active loading spectrum control method for vehicle transmission structure light-weight design, it is characterized in that, first carry out loading spectrum signature analysis according to the strength characteristics of part material, obtain distributing between the load zones under the required life-span; Then adjust load position, optimize strengthening load and damage load proportion, set up part stress spectra and expect distributed model; Expect that distributed model carries out accessory size structural design according to part stress spectra; Fail-safe analysis is carried out to design of part after design, if meet given permanance mileage, terminates design; Otherwise, readjust and optimize strengthening load and damage load proportion, find between best effort load zones, adjustment Element Design structure.
2. according to claim 1 for the active loading spectrum control method of vehicle transmission structure light-weight design, it is characterized in that, the strength characteristics of described part material carries out loading spectrum signature analysis: according to the part that will design, and selected material, determines S-N Curve; Carry out the analysis of strength of materials variation characteristic; Determine given permanance mileage N lower fatigue lifetime.
3. according to claim 1 for the active loading spectrum control method of vehicle transmission structure light-weight design, it is characterized in that, described part stress spectra of setting up expects distributed model: carry out interval to distribution between the load zones corresponding to fatigue lifetime N and differentiate, the load that strengthened and damage between load zones; Adjustment strengthening load and the ratio of damage load, determine between part best effort load zones; The optimum stress scope that regulation is expected; Set up part stress spectra and expect distributed model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410580217.4A CN104460339B (en) | 2014-10-27 | 2014-10-27 | Active load spectrum control method used for designing automobile transmission structures in lightweight mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410580217.4A CN104460339B (en) | 2014-10-27 | 2014-10-27 | Active load spectrum control method used for designing automobile transmission structures in lightweight mode |
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| CN104460339A true CN104460339A (en) | 2015-03-25 |
| CN104460339B CN104460339B (en) | 2017-02-15 |
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| CN201410580217.4A Expired - Fee Related CN104460339B (en) | 2014-10-27 | 2014-10-27 | Active load spectrum control method used for designing automobile transmission structures in lightweight mode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604255A (en) * | 2015-11-19 | 2018-09-28 | 达姆施塔特工业大学 | Method for designing and determining size to the new component of motor vehicle |
| CN111122358A (en) * | 2020-01-13 | 2020-05-08 | 上海工程技术大学 | Method for determining fatigue life of magnesium alloy by considering hysteretic elastic energy |
| CN112001082A (en) * | 2020-08-25 | 2020-11-27 | 上海理工大学 | I-beam front axle lightweight method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE481510T1 (en) * | 2003-09-18 | 2010-10-15 | Mahindra & Mahindra Ltd | METHOD FOR PRODUCING TRANSMISSIONS AND/OR AXLES WHICH HAVE IMPROVED BENDING STRENGTH AND PERMANENT PITTING RESISTANCE THAN PREVIOUS ALLOY STEELS. |
| CN100386237C (en) * | 2006-03-23 | 2008-05-07 | 上海理工大学 | Automobile structure lightweighting design method based on structure intensity variation characteristic |
| CN101231222B (en) * | 2008-02-15 | 2010-07-07 | 上海理工大学 | Method for rapidly and nondestructively prediction of residual strength and residual lifetime |
| CN101718651A (en) * | 2009-11-18 | 2010-06-02 | 上海理工大学 | Evaluation method of residual strength and service life under strengthening and damaging combined action |
| CN102156066A (en) * | 2011-03-28 | 2011-08-17 | 上海理工大学 | Method for predicating fatigue life of mobile S-N (Stress-Life) curve on basis of strengthening and damage |
| CN102937520A (en) * | 2012-11-12 | 2013-02-20 | 上海理工大学 | Fatigue life prediction method of mechanical component under variable amplitude loading |
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2014
- 2014-10-27 CN CN201410580217.4A patent/CN104460339B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604255A (en) * | 2015-11-19 | 2018-09-28 | 达姆施塔特工业大学 | Method for designing and determining size to the new component of motor vehicle |
| CN111122358A (en) * | 2020-01-13 | 2020-05-08 | 上海工程技术大学 | Method for determining fatigue life of magnesium alloy by considering hysteretic elastic energy |
| CN111122358B (en) * | 2020-01-13 | 2022-05-31 | 上海工程技术大学 | Method for determining fatigue life of magnesium alloy by considering hysteretic elastic energy |
| CN112001082A (en) * | 2020-08-25 | 2020-11-27 | 上海理工大学 | I-beam front axle lightweight method |
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| CN104460339B (en) | 2017-02-15 |
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