Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results)
Appropriate relation among the inertia, suspension characteristics and brake force distribution will be required for achieving comfortable motion of vehicle and stable contact forces at braking. At a forethought stage where the design concept is decided, we usually do not know the detail specificati...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2014-09-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/80/817/80_2014dr0261/_pdf/-char/en |
| _version_ | 1797989059657728000 |
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| author | Ryoichi KURASAKO Goro OBINATA Kazufumi TORIYA |
| author_facet | Ryoichi KURASAKO Goro OBINATA Kazufumi TORIYA |
| author_sort | Ryoichi KURASAKO |
| collection | DOAJ |
| description | Appropriate relation among the inertia, suspension characteristics and brake force distribution will be required for achieving comfortable motion of vehicle and stable contact forces at braking. At a forethought stage where the design concept is decided, we usually do not know the detail specifications of inertia and suspension; therefore, simple analytical models would be desired to check the inertia and suspension characteristics for comfortable ride. In this paper, we propose a simple analytical model to express 2-dimenstional motions of a vehicle, at side view while braking. In the model, we can change the brake force distribution which include transitionally change, from the start of braking to the end. Then, we analyze by using the proposed model, how the brake force distribution influences the vehicle vertical and pitch motion, and contact forces at side view. The model is composed of the mass and the moment of inertia, of the suspension characteristics which are expressed two virtual links, springs and dumpers. In the model, the virtual links convert the horizontal brake forces into vertical reaction forces. The friction property fluctuations between brake pads and rotors may change the brake force distribution. This paper presents one method which makes it possible to design brake force distribution, having small influences to the vehicle motions and the contact forces, and to clarify the required characteristics for inertia and suspension at the forethought stage. The proposed model and the numerical calculation method with the model are confirmed by experiments. |
| first_indexed | 2024-04-11T08:14:12Z |
| format | Article |
| id | doaj.art-dffa6847daf74b09a38bdd93290e63fd |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:14:12Z |
| publishDate | 2014-09-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-dffa6847daf74b09a38bdd93290e63fd2022-12-22T04:35:14ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612014-09-0180817DR0261DR026110.1299/transjsme.2014dr0261transjsmeStudy on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results)Ryoichi KURASAKO0Goro OBINATA1Kazufumi TORIYA2TOYOTA MOTOR CORPORATIONEco Topia Science Institute, Nagoya UniversityTOYOTA MOTOR CORPORATIONAppropriate relation among the inertia, suspension characteristics and brake force distribution will be required for achieving comfortable motion of vehicle and stable contact forces at braking. At a forethought stage where the design concept is decided, we usually do not know the detail specifications of inertia and suspension; therefore, simple analytical models would be desired to check the inertia and suspension characteristics for comfortable ride. In this paper, we propose a simple analytical model to express 2-dimenstional motions of a vehicle, at side view while braking. In the model, we can change the brake force distribution which include transitionally change, from the start of braking to the end. Then, we analyze by using the proposed model, how the brake force distribution influences the vehicle vertical and pitch motion, and contact forces at side view. The model is composed of the mass and the moment of inertia, of the suspension characteristics which are expressed two virtual links, springs and dumpers. In the model, the virtual links convert the horizontal brake forces into vertical reaction forces. The friction property fluctuations between brake pads and rotors may change the brake force distribution. This paper presents one method which makes it possible to design brake force distribution, having small influences to the vehicle motions and the contact forces, and to clarify the required characteristics for inertia and suspension at the forethought stage. The proposed model and the numerical calculation method with the model are confirmed by experiments.https://www.jstage.jst.go.jp/article/transjsme/80/817/80_2014dr0261/_pdf/-char/enbrake force distributionvirtual linkcontact forcevehicle motiontransitional changefriction pair |
| spellingShingle | Ryoichi KURASAKO Goro OBINATA Kazufumi TORIYA Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results) Nihon Kikai Gakkai ronbunshu brake force distribution virtual link contact force vehicle motion transitional change friction pair |
| title | Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results) |
| title_full | Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results) |
| title_fullStr | Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results) |
| title_full_unstemmed | Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results) |
| title_short | Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results) |
| title_sort | study on influences of brake force distribution to vehicle motions numerical calculation of pitch motion and contact forces and the comparison with experimental results |
| topic | brake force distribution virtual link contact force vehicle motion transitional change friction pair |
| url | https://www.jstage.jst.go.jp/article/transjsme/80/817/80_2014dr0261/_pdf/-char/en |
| work_keys_str_mv | AT ryoichikurasako studyoninfluencesofbrakeforcedistributiontovehiclemotionsnumericalcalculationofpitchmotionandcontactforcesandthecomparisonwithexperimentalresults AT goroobinata studyoninfluencesofbrakeforcedistributiontovehiclemotionsnumericalcalculationofpitchmotionandcontactforcesandthecomparisonwithexperimentalresults AT kazufumitoriya studyoninfluencesofbrakeforcedistributiontovehiclemotionsnumericalcalculationofpitchmotionandcontactforcesandthecomparisonwithexperimentalresults |