WO2002018816A1 - Dispositif pour absorber l'energie de choc - Google Patents

Dispositif pour absorber l'energie de choc Download PDF

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Publication number
WO2002018816A1
WO2002018816A1 PCT/DE2001/003294 DE0103294W WO0218816A1 WO 2002018816 A1 WO2002018816 A1 WO 2002018816A1 DE 0103294 W DE0103294 W DE 0103294W WO 0218816 A1 WO0218816 A1 WO 0218816A1
Authority
WO
WIPO (PCT)
Prior art keywords
deformation
elements
impact force
deformation elements
opening
Prior art date
Application number
PCT/DE2001/003294
Other languages
German (de)
English (en)
Inventor
Markus Gramlich
Original Assignee
Dynotec Gesellschaft Zur Entwicklung Innovativer Technologien Prof. Reinhold Geilsdörfer, Markus Gramlich, Josef Schäffer Gbr
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynotec Gesellschaft Zur Entwicklung Innovativer Technologien Prof. Reinhold Geilsdörfer, Markus Gramlich, Josef Schäffer Gbr filed Critical Dynotec Gesellschaft Zur Entwicklung Innovativer Technologien Prof. Reinhold Geilsdörfer, Markus Gramlich, Josef Schäffer Gbr
Publication of WO2002018816A1 publication Critical patent/WO2002018816A1/fr

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Classifications

    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members

Definitions

  • the invention relates to a device for absorbing impact energy by permanent deformation and / or destruction of a deformation element.
  • Devices of the specified type are used primarily in motor vehicles in order to absorb part of the impact energy in the event of a motor vehicle colliding with an obstacle and to keep the impact forces acting on the vehicle small.
  • a deformation element is known from DE 1 96 27 061 A1, which comprises a tube section consisting of carbon fibers and aramid fibers, which can be deformed according to the inverting principle for energy conversion.
  • a component with a concave groove, which defines the outer turning radius is connected to the free pipe end.
  • the edge of the pipe section is chamfered towards the fillet, which reduces the initial circumferential force when the pipe section is deformed.
  • the object of the invention is to provide a device of the type mentioned, which is characterized by a low weight, ease of manufacture and good IV material utilization and which enables a favorable force-displacement characteristic.
  • the deformation element has an opening which tapers in the direction of the impact force, into which engages a pressure body which tapers in the same direction and which, under the effect of the impact force, has its tapered end first against the deformation resistance of the Deformation elements can be moved into its opening.
  • the device according to the invention has a plurality of deformation elements arranged in series one behind the other, each one in the direction of Impact force tapering opening and a tapered lateral surface in the same direction, the tapered end of a deformation element engaging in the tapering opening in the same direction of the following deformation element and the deformation elements are movable under the action of the impact force while overcoming their deformation resistance.
  • the level of force and the force-displacement curve when a shock is received can be influenced by the shape, size, strength and number of the deformation elements and by the material used for their production.
  • the designer therefore has many options for adapting the device according to the invention to the requirements of the respective application, and it is thereby possible for him to serve a wide range of different applications with the device according to the invention.
  • the shape of the deformation elements the energy absorption can be greatly influenced, in particular, by the choice of the angle of inclination of the openings and the lateral surfaces of the deformation elements.
  • the angles of inclination of the openings and the lateral surfaces can be constant or can also increase or decrease as seen in the longitudinal direction in order to influence the force-displacement characteristic in the sense of a linear, progressive or degressive curve.
  • the outer surfaces and the bore surfaces of the deformation elements and the outer surface of the pressure body are preferably designed to be rotationally symmetrical. However, they can also be designed differently and, for example, have an elliptical or polygonal cross section.
  • the pressure body can also be designed as a deformation element.
  • Fiber composite materials are preferably used to produce the deformation elements, but metals and metal alloys as well as for individual parts of the device, e.g. the pressure element, metal foams into consideration.
  • the mutually assigned deformation elements can be connected to one another and optionally to a pressure element in a frictionally or materially connected manner.
  • An advantageous embodiment of the invention can also consist in that the pressure body and the deformation element assigned to it or mutually assigned deformation elements on both sides of a common carrier Elements are attached, which is also deformable or destructible under the action of an impact force. Tissue and other fiber composites, foils, papers or cardboards can be used as carrier elements.
  • a plurality of deformation elements arranged one behind the other and interlocking can be surrounded on the inside and / or outside by an enveloping body.
  • the enveloping body can be closed or designed as a cage.
  • the enveloping body preferably consists of a more elastomeric material.
  • the space inside the openings of the deformation elements can also be filled with a compressible filling material, for example a foam.
  • a plurality of deformation elements or pressure elements can be arranged next to one another, which form a first surface element, and these deformation elements or pressure elements can be assigned correspondingly arranged deformation elements which are arranged next to one another and which form a second form the first surface element equidistant surface element.
  • Such an arrangement which can also be expanded by further equidistant surface elements of the same type, can be used to easily form shock-absorbing zones which extend over surfaces of any design. It is also advantageous here if the pressure bodies or deformation elements of the individual surface elements are connected to one another by a carrier element.
  • a particularly simple and cost-effective design of such a flat damping structure can consist, according to the invention, in that the deformation elements of a surface element are jointly formed by forming from sheet metal or a film as the starting material, the deformation elements being connected to one another by sections of the sheet metal or the film which bridge gaps between the deformation elements.
  • the device according to the invention is suitable on the one hand for producing shock absorbers, impact absorbers or crash elements which are used in motor vehicles, and on the other hand for producing shock-absorbing deformation zones of vehicles which are arranged in front of or behind a passenger cell designed as a dimensionally stable space.
  • the deformation elements connected in series become effective at the same time, differences in the energy absorption behavior of the individual elements being leveled and steep changes in the force profile being avoided.
  • the device according to the invention enables a modular construction, which is particularly advantageous for individual applications, in that, depending on the requirement, prefabricated deformation elements are connected to one another in a suitable number and size.
  • Figure 1 intended for installation in the nose of a racing vehicle
  • FIG. 2 shows a device according to the invention with a degressive force-displacement characteristic
  • FIG. 3 shows a device according to the invention with a progressive force-displacement
  • Figure 4 is a schematic representation of a device according to the invention formed from a plurality of deformation elements arranged side by side and one above the other.
  • the device shown in Figure 1 consists of a pressure element 1 and four deformation elements 2, 3, 4, 5, which are arranged in series one behind the other.
  • the pressure element 1 has the shape of a circular truncated cone with a raised curved base surface 6, a lateral surface 7 and a flat head surface 8.
  • the deformation elements 2 to 5 are designed as truncated cone-like rings, the conical lateral surfaces 21, 31, 41, 51 and tapered bore surfaces equidistant from them 22, 32, 42, 52.
  • the deformation elements have 2 to 5 blunt conical ring surfaces on the end faces.
  • the axial length of the deformation elements 2 to 5 is essentially the same. However, their average diameter increases with the distance from the pressure element 1.
  • the pressure element 1 and the deformation elements 2 to 5 are arranged axially one behind the other in the same direction in such a way that the end of one element facing the cone tip projects into the end of the following element facing away from the cone tip and with a portion of its lateral surface 7, 21, 31, 41 on the bore surface 22, 32, 42, 52 of the following deformation element.
  • the elements 1 to 5 can either be connected to one another by frictional contact, but they can also be glued to one another in order to ensure that the elements 1 to 5 can only be moved relative to one another at an initial force given by the shear resistance of the adhesive connection.
  • the elements 1 to 5 are surrounded by an enveloping body 9, which also holds the elements 1 to 5 in their interlocking arrangement, but does not make any significant contribution to energy absorption.
  • the deformation elements 2 to 5 are covered by a hollow envelope body 10.
  • the device described is intended for an arrangement in the front area of a racing sports vehicle and is aligned with its longitudinal axis in the longitudinal direction of the vehicle in this application, the pressure element 1 preferably being arranged in the front in the direction of travel. If the vehicle drives against an obstacle, the impact force that occurs is absorbed by the pressure element 1 and transmitted to the rigid driver's cell via the deformation elements 2 to 5. This load pushes the elements 1 to 5 into one another, the deformation elements 2 to 5 being subjected to tensile stress and thereby being stretched and possibly destroyed in their structure. In this process, the impact force is limited to a substantially constant maximum value, which is dimensioned such that the driver's cell is not destroyed.
  • the device shown in FIG. 2 consists of a pressure element 1 and four deformation elements 2 to 5, which partially interlock.
  • the outer surfaces 7, 21, 31, 41, 51 are curved outwards in such a way that their inclination to the longitudinal axis 11 decreases in the direction of the pressure element 1. It is hereby achieved that when the elements 1 to 5 are pressed into one another by an axial impact load, the deformation resistance and thus the transferable impact force decrease with increasing deformation path.
  • FIG. 3 shows an embodiment in which the lateral surfaces 7, 21, 31, 41, 51 of the elements 1 to 5 are curved inwards, their angle of inclination to the longitudinal axis 11 increases in the direction of the pressure element 1.
  • the bore surfaces 22, 32, 42, 52 cooperating with the lateral surfaces are correspondingly curved outwards. This configuration leads to an increase in the deformation resistance and thus the transmittable impact force with an increasing deformation path.
  • the device consists of three surface elements 100, 200, 300, which are each formed from 16 deformation elements 110, 201, 301 arranged in the same direction next to one another.
  • the deformation elements 1 01, 201, 301 are connected to one another by flat support elements 400, 500, which each extend between the surface elements 100, 200 and 300.
  • the deformation elements 101, 201, 301 are designed as frustoconical rings and are arranged in the same direction, the deformation elements of one surface element each being arranged coaxially with the deformation elements of the other two surface elements.
  • the deformation elements 101, 201, 301 differ from surface element to surface element, but they can also be the same.
  • Each surface element 1 00, 200 or 300 can in turn consist of the same or different deformation elements.
  • the device is intended to absorb impact forces in the axial direction of the deformation elements.
  • the deformation elements are pressed into one another under the action of such a force, penetrating the support elements 400, 500 separating them, whereby they are deformed and, depending on the magnitude of the force, more or less destroyed. Effective energy absorption is achieved in this way.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

L'invention concerne un dispositif pour absorber l'énergie de choc par déformation rémanente et/ou destruction d'éléments de déformation (2, 3, 4, 5). Selon l'invention, un élément de déformation (2) comporte une ouverture qui s'amincit en direction de l'énergie de choc et dans laquelle s'engrène un élément de pression (1) dont la forme s'amincit également dans la même direction. Sous l'effet de l'énergie de choc, cet élément pénètre dans l'ouverture de l'élément de déformation, son extrémité amincie étant située vers l'avant, et son mouvement s'effectuant contre la résistance à la déformation de l'élément de déformation. A cet élément de déformation (2) s'en ajoutent d'autres (3, 4, 5), disposés en ligne les uns derrière les autres, chacun ayant une ouverture qui s'amincit en direction de l'énergie de choc et une surface latérale qui s'amincit dans le même sens. L'extrémité amincie d'un élément de déformation s'emboîte dans l'ouverture de l'élément de déformation suivant, cette ouverture s'amincissant dans la même direction. Ces éléments de déformation (2, 3, 4, 5) s'emboîtent les uns dans les autres sous l'effet d'une énergie de choc, dépassant ainsi leur résistance à la déformation.
PCT/DE2001/003294 2000-08-31 2001-08-31 Dispositif pour absorber l'energie de choc WO2002018816A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10043140.2 2000-08-31
DE2000143140 DE10043140A1 (de) 2000-08-31 2000-08-31 Vorrichtung zur Absorption von Stoßenergie

Publications (1)

Publication Number Publication Date
WO2002018816A1 true WO2002018816A1 (fr) 2002-03-07

Family

ID=7654665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003294 WO2002018816A1 (fr) 2000-08-31 2001-08-31 Dispositif pour absorber l'energie de choc

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DE (1) DE10043140A1 (fr)
WO (1) WO2002018816A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6536986B1 (en) * 2001-09-24 2003-03-25 Barrier Systems, Inc. Energy absorption apparatus with collapsible modules
US20150069773A1 (en) * 2013-09-10 2015-03-12 Fuji Jukogyo Kabushiki Kaisha Impact absorber
CN104790552A (zh) * 2015-04-22 2015-07-22 中国科学院、水利部成都山地灾害与环境研究所 一种高耗能大变形缓冲装置
WO2016096528A1 (fr) * 2014-12-18 2016-06-23 Bayerische Motoren Werke Aktiengesellschaft Structure de déformation, en particulier pour véhicule automobile pour la protection de piétons
RU2759566C1 (ru) * 2021-04-08 2021-11-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Горский государственный аграрный университет" Разделительный барьер для автомобильных дорог
WO2022096319A1 (fr) * 2020-11-04 2022-05-12 Zephyros, Inc. Élément d'absorption d'énergie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017113943A1 (de) * 2017-06-23 2018-12-27 Hans-Georg Glöckler Aufprallenergieabsorbierendes Bauteil

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135749A (en) * 1937-01-28 1938-11-08 Gullo Anthony Shock absorber
US3887223A (en) * 1972-12-20 1975-06-03 Porsche Ag Collision energy dissipation apparatus for a passenger motor vehicle
WO1980001829A1 (fr) * 1979-02-23 1980-09-04 Ugine Aciers Nouveau dispositif absorbeur d'energie cinetique pour mobiles
US4844213A (en) * 1987-09-29 1989-07-04 Travis William B Energy absorption system
US4890877A (en) * 1988-07-12 1990-01-02 General Motors Corporation Energy absorption system for vehicle door and method of making
EP0652388A1 (fr) * 1993-11-10 1995-05-10 Automobiles Peugeot Dispositif absorbeur de choc
DE19627061A1 (de) 1996-07-05 1996-11-28 Audi Ag Deformationselement
DE19625295A1 (de) * 1995-06-30 1997-01-02 Volkswagen Ag Deformationselement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135749A (en) * 1937-01-28 1938-11-08 Gullo Anthony Shock absorber
US3887223A (en) * 1972-12-20 1975-06-03 Porsche Ag Collision energy dissipation apparatus for a passenger motor vehicle
WO1980001829A1 (fr) * 1979-02-23 1980-09-04 Ugine Aciers Nouveau dispositif absorbeur d'energie cinetique pour mobiles
US4844213A (en) * 1987-09-29 1989-07-04 Travis William B Energy absorption system
US4890877A (en) * 1988-07-12 1990-01-02 General Motors Corporation Energy absorption system for vehicle door and method of making
EP0652388A1 (fr) * 1993-11-10 1995-05-10 Automobiles Peugeot Dispositif absorbeur de choc
DE19625295A1 (de) * 1995-06-30 1997-01-02 Volkswagen Ag Deformationselement
DE19627061A1 (de) 1996-07-05 1996-11-28 Audi Ag Deformationselement

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6536986B1 (en) * 2001-09-24 2003-03-25 Barrier Systems, Inc. Energy absorption apparatus with collapsible modules
US20150069773A1 (en) * 2013-09-10 2015-03-12 Fuji Jukogyo Kabushiki Kaisha Impact absorber
US10077015B2 (en) * 2013-09-10 2018-09-18 Subaru Corporation Impact absorber
WO2016096528A1 (fr) * 2014-12-18 2016-06-23 Bayerische Motoren Werke Aktiengesellschaft Structure de déformation, en particulier pour véhicule automobile pour la protection de piétons
CN107074176A (zh) * 2014-12-18 2017-08-18 宝马股份公司 变形结构、尤其是用于机动车的行人保护
US10315597B2 (en) 2014-12-18 2019-06-11 Bayerische Motoren Werke Aktiengesellschaft Deformation structure, in particular for pedestrian protection for a motor vehicle
CN107074176B (zh) * 2014-12-18 2019-07-16 宝马股份公司 变形结构、尤其是用于机动车的行人保护
CN104790552A (zh) * 2015-04-22 2015-07-22 中国科学院、水利部成都山地灾害与环境研究所 一种高耗能大变形缓冲装置
WO2022096319A1 (fr) * 2020-11-04 2022-05-12 Zephyros, Inc. Élément d'absorption d'énergie
RU2759566C1 (ru) * 2021-04-08 2021-11-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Горский государственный аграрный университет" Разделительный барьер для автомобильных дорог

Also Published As

Publication number Publication date
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