JP6962139B2 - クラッシュボックス及びその製造方法 - Google Patents
クラッシュボックス及びその製造方法 Download PDFInfo
- Publication number
- JP6962139B2 JP6962139B2 JP2017214043A JP2017214043A JP6962139B2 JP 6962139 B2 JP6962139 B2 JP 6962139B2 JP 2017214043 A JP2017214043 A JP 2017214043A JP 2017214043 A JP2017214043 A JP 2017214043A JP 6962139 B2 JP6962139 B2 JP 6962139B2
- Authority
- JP
- Japan
- Prior art keywords
- crash box
- layer
- axial direction
- porous layer
- laser
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
- F16F7/003—One-shot shock absorbers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0208—Alloys
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0233—Materials; Material properties solids deforming plastically in operation
-
- 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
- F16F2226/00—Manufacturing; Treatments
- F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
Description
クラッシュボックスの一例として、例えば、特許文献1には、クラッシュボックスの一部に熱を加えて軟質化させ、蛇腹状変形の起点となる軟質部を形成する技術が開示されている。
軸方向に衝撃を受けると、一部が軸方向に変形して衝撃エネルギーを吸収するクラッシュボックスであって、
金属製の第1層と、前記第1層よりも気泡の量が多い、金属製の第2層と、が軸方向に交互に形成されている。
軸方向に衝撃を受けると、一部が軸方向に変形して衝撃エネルギーを吸収するクラッシュボックスの製造方法であって、
金属粉にレーザを照射し硬化させることで第1層を造形する第1工程と、
前記第1工程よりもレーザの入熱エネルギーが少ない状態で金属粉にレーザを照射し硬化させることで第2層を造形する第2工程と、
を交互に設けることで、前記第1層と前記第2層とを軸方向に交互に形成する。
まず、図1を参照して、本実施の形態に係るクラッシュボックス1の構成について説明する。図1は、本実施の形態に係るクラッシュボックス1の構成を示す斜視図である。
(1)まず、CAEを利用して、設計パラメータを初期値とした状態で落錘試験の模擬を行い、蛇腹の凹凸及び位置等を予測する。
(2)続いて、CAEを利用して、設計パラメータを調整し、調整後の状態で再度落錘試験の模擬を行う。
(3)その結果、目標の吸収エネルギーが得られなかった場合は、目標の吸収エネルギーが得られるまで、(2)の設計パラメータの調整及び落錘試験の模擬を繰り返し行う。
三次元造形装置において、断面体を造形する方法としては、例えば、選択的レーザ溶融法又はレーザ粉体肉盛法を使用することが可能である。選択的レーザ溶融法は、ステージ上に粉を一層づつ敷き、必要な部分にレーザを照射して、その必要な部分の粉を溶融し、硬化させる方法である。一方、レーザ粉体肉盛法は、必要な部分に粉を供給すると同時に、その粉にレーザを照射して、その粉を溶融し、硬化させる方法である。
続いて、図11を参照して、本実施の形態に係るクラッシュボックス1の具体的な実施例について説明する。図11は、本実施例に係るクラッシュボックス1Aの構成を示す斜視図である。
10 バルク層
20 ポーラス層
Claims (3)
- 軸方向に衝撃を受けると、一部が軸方向に変形して衝撃エネルギーを吸収するクラッシュボックスであって、
金属製の第1層と、前記第1層よりも気泡の量が多い、金属製の第2層と、が軸方向に交互に形成され、
前記第1層及び前記第2層は一体成形されている、クラッシュボックス。 - 軸方向に衝撃を受けると、一部が軸方向に変形して衝撃エネルギーを吸収するクラッシュボックスであって、
金属製の第1層と、前記第1層よりも気泡の量が多い、金属製の第2層と、が軸方向に交互に形成され、
前記クラッシュボックスは、軸方向が車両の前後方向となる姿勢で車両前部又は車両後部に取り付けられるものであり、
前記第2層は、車両中央に近い側の前記第2層よりも、車両中央から遠い側の前記第2層の方が、ボイド率が高い、クラッシュボックス。 - 軸方向に衝撃を受けると、一部が軸方向に変形して衝撃エネルギーを吸収するクラッシュボックスの製造方法であって、
金属粉にレーザを照射し硬化させることで第1層を造形する第1工程と、
前記第1工程よりもレーザの入熱エネルギーが少ない状態で金属粉にレーザを照射し硬化させることで第2層を造形する第2工程と、
を交互に設けることで、前記第1層と前記第2層とを軸方向に交互に形成する、クラッシュボックスの製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017214043A JP6962139B2 (ja) | 2017-11-06 | 2017-11-06 | クラッシュボックス及びその製造方法 |
DE102018124192.5A DE102018124192B4 (de) | 2017-11-06 | 2018-10-01 | Crashbox und Herstellungsverfahren derselben |
US16/149,526 US10894523B2 (en) | 2017-11-06 | 2018-10-02 | Crash box and its manufacturing method |
CN201811300727.6A CN109747578A (zh) | 2017-11-06 | 2018-11-02 | 碰撞盒及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017214043A JP6962139B2 (ja) | 2017-11-06 | 2017-11-06 | クラッシュボックス及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019086072A JP2019086072A (ja) | 2019-06-06 |
JP6962139B2 true JP6962139B2 (ja) | 2021-11-05 |
Family
ID=66179096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017214043A Active JP6962139B2 (ja) | 2017-11-06 | 2017-11-06 | クラッシュボックス及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10894523B2 (ja) |
JP (1) | JP6962139B2 (ja) |
CN (1) | CN109747578A (ja) |
DE (1) | DE102018124192B4 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10618483B2 (en) * | 2018-01-31 | 2020-04-14 | GM Global Technology Operations LLC | Multi-component composite energy-absorbing structure having a corrugated joint |
DE102019217434A1 (de) * | 2019-11-12 | 2021-05-12 | Siemens Aktiengesellschaft | Verfahren zur schichtweisen additiven Herstellung eines Verbundwerkstoffs |
DE102020212130A1 (de) | 2020-09-25 | 2022-03-31 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg | Kühlerbaugruppe für ein Fahrzeug |
KR102302179B1 (ko) * | 2020-12-03 | 2021-09-13 | 한국항공우주연구원 | 3d 프린팅을 활용한 알루미늄 허니컴 제조방법 |
CN114309650A (zh) * | 2021-12-28 | 2022-04-12 | 南京晨光集团有限责任公司 | 一种基于激光增材制造技术制备铜合金减震器的方法 |
Family Cites Families (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751289A (en) * | 1951-10-08 | 1956-06-19 | Bjorksten Res Lab | Method of producing metal foam |
US3224846A (en) * | 1962-09-24 | 1965-12-21 | Lor Corp | Light weight structural material and means for making |
US3214265A (en) * | 1963-03-11 | 1965-10-26 | Lor Corp | Method of making metal foam bodies |
US3378296A (en) * | 1965-06-21 | 1968-04-16 | William P. Crocker | Vehicle bumper cushion |
US3721433A (en) | 1969-11-21 | 1973-03-20 | Collision Devices Inc | Deformable shock-absorbing guard |
US3933387A (en) * | 1975-03-10 | 1976-01-20 | General Motors Corporation | Thermoformed plastic energy absorber for vehicles |
US4174014A (en) * | 1975-12-29 | 1979-11-13 | Bjorksten Johan A | Shock absorbent electric vehicle and batteries |
GB1599841A (en) * | 1977-01-24 | 1981-10-07 | Beckley A S | Modular impact energy absorbing system for vehicles |
US5052732A (en) * | 1990-04-02 | 1991-10-01 | Renco Supply, Inc. | Crash attenuator utilizing fibrous honeycomb material |
JPH07145843A (ja) | 1993-11-24 | 1995-06-06 | Sumitomo Light Metal Ind Ltd | アルミニウム合金製自動車用エネルギー吸収メンバー |
JPH0868436A (ja) * | 1994-08-26 | 1996-03-12 | Nippon Light Metal Co Ltd | 発泡アルミニウム製衝撃エネルギー吸収部材及び製造方法 |
JP3645924B2 (ja) | 1994-09-21 | 2005-05-11 | 昭和電工株式会社 | 衝撃吸収構造体 |
JP3207376B2 (ja) * | 1997-07-30 | 2001-09-10 | 昭和電工株式会社 | 衝撃吸収機能を有する金属製構造材 |
US6062632A (en) * | 1998-03-20 | 2000-05-16 | Solectria Corporation | Vehicle body collision energy absorption system |
US6698331B1 (en) * | 1999-03-10 | 2004-03-02 | Fraunhofer Usa, Inc. | Use of metal foams in armor systems |
DE19953395A1 (de) * | 1999-11-06 | 2001-05-10 | Siemens Duewag Gmbh | Einrichtung für den Energieverzehr bei einem Schienenfahrzeug, insbesondere des Nahverkehrs |
DE10158627B4 (de) * | 2001-11-29 | 2005-08-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Trägerstrukturen zur Aufnahme von Kräften und Verformungsenergie |
CA2422415A1 (en) | 2002-03-13 | 2003-09-13 | Lawrence R. Parisotto | Multi-phase energy absorbing and impact attenuating modules |
FR2849416B1 (fr) * | 2002-12-30 | 2006-03-03 | Valeo Thermique Moteur Sa | Boitier absorbeur d'energie pour poutre pare-chocs de vehicule automobile |
DE602004025339D1 (de) * | 2003-06-03 | 2010-03-18 | Decoma Int Inc | Stossfänger energieaufnahmevorrichtung und verfahren zu seiner herstellung und montage |
FR2889136B1 (fr) * | 2005-07-28 | 2008-10-03 | Valeo Systemes Thermiques | Dispositif d'absorption d'energie notamment pour poutre pare-chocs de vehicule automobile |
EP1803513B1 (en) * | 2005-12-30 | 2017-03-29 | Howmedica Osteonics Corp. | Method of manufacturing implants using laser |
US20080001416A1 (en) * | 2006-06-30 | 2008-01-03 | Tansen Dhananjay Chaudhari | Energy absorbing bumper assemblies and methods for absorbing kinetic energy during an impact event |
JP2009096261A (ja) * | 2007-10-15 | 2009-05-07 | Toyoda Iron Works Co Ltd | 衝撃エネルギー吸収部材およびその製造方法 |
DE102010035367B4 (de) * | 2010-08-25 | 2021-06-24 | Audi Ag | Crashenergieabsorbierende Anordnung für ein Kraftfahrzeug mit Hybridantrieb oder Elektroantrieb |
US8668189B2 (en) * | 2010-09-29 | 2014-03-11 | Walker Lee Guthrie | Sine wave spring |
FR3008014B1 (fr) * | 2013-07-04 | 2023-06-09 | Association Pour La Rech Et Le Developpement De Methodes Et Processus Industriels Armines | Procede de fabrication additve de pieces par fusion ou frittage de particules de poudre(s) au moyen d un faisceau de haute energie avec des poudres adaptees au couple procede/materiau vise |
US20170051806A1 (en) * | 2014-04-24 | 2017-02-23 | President And Fellows Of Harvard College | Shape Recoverable And Reusable Energy Absorbing Structures, Systems And Methods For Manufacture Thereof |
US9376074B2 (en) * | 2014-04-25 | 2016-06-28 | GM Global Technology Operations LLC | Architected automotive impact beam |
US20150321289A1 (en) * | 2014-05-12 | 2015-11-12 | Siemens Energy, Inc. | Laser deposition of metal foam |
US9533642B2 (en) * | 2014-09-25 | 2017-01-03 | GM Global Technology Operations LLC | Hierarchical sandwich structures |
WO2017184930A1 (en) * | 2016-04-21 | 2017-10-26 | Tesseract Structural Innovations, Inc. | Uniform deceleration unit crash box |
US10556559B2 (en) * | 2014-11-24 | 2020-02-11 | Tesseract Structural Innovations, Inc. | Uniform deceleration unit |
CN104760554B (zh) * | 2015-04-16 | 2018-01-23 | 南京理工大学 | 车用插片填充式泡沫铝吸能盒 |
CN205044684U (zh) * | 2015-10-16 | 2016-02-24 | 江西江铃集团新能源汽车有限公司 | 一种用于汽车车身的防撞装置 |
US9630582B1 (en) * | 2016-03-10 | 2017-04-25 | Ford Global Technologies, Llc | Crush-can with corrugated core |
CN105665704A (zh) * | 2016-03-11 | 2016-06-15 | 上海拓宝机电科技有限公司 | 金属激光选区熔化方法 |
CN106467076A (zh) * | 2016-09-09 | 2017-03-01 | 北京汽车股份有限公司 | 车辆 |
CN106735221A (zh) * | 2017-02-24 | 2017-05-31 | 广东工业大学 | 一种激光冲击锻打金属3d打印复合制造方法及装置 |
US10131301B2 (en) * | 2017-03-07 | 2018-11-20 | Ford Global Technology, Llc | Passive energy absorber structure adaptable to manage impact energy for different deformation targets and loads |
CN106882144A (zh) * | 2017-03-29 | 2017-06-23 | 贵州大学 | 一种车辆撞梁总成和车辆防撞结构 |
CN107252893A (zh) * | 2017-06-30 | 2017-10-17 | 英诺激光科技股份有限公司 | 一种金属工件的激光3d打印方法及其系统 |
-
2017
- 2017-11-06 JP JP2017214043A patent/JP6962139B2/ja active Active
-
2018
- 2018-10-01 DE DE102018124192.5A patent/DE102018124192B4/de active Active
- 2018-10-02 US US16/149,526 patent/US10894523B2/en active Active
- 2018-11-02 CN CN201811300727.6A patent/CN109747578A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US10894523B2 (en) | 2021-01-19 |
DE102018124192A1 (de) | 2019-05-09 |
CN109747578A (zh) | 2019-05-14 |
US20190135211A1 (en) | 2019-05-09 |
JP2019086072A (ja) | 2019-06-06 |
DE102018124192B4 (de) | 2022-02-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6962139B2 (ja) | クラッシュボックス及びその製造方法 | |
CN108528531B (zh) | 汽车结构部件及其制造方法 | |
Goyal et al. | Crashworthiness analysis of foam filled star shape polygon of thin-walled structure | |
JP6859435B2 (ja) | 積層造形法のための方法及び熱的構造体 | |
US20160175932A1 (en) | Additive manufacturing method and apparatus | |
JP6358206B2 (ja) | 金属部材の製造方法 | |
JP2019534186A5 (ja) | ||
Jin et al. | Effect of structural parameters on mechanical properties of Pyramidal Kagome lattice material under impact loading | |
WO2016051801A1 (ja) | 三次元形状造形物の製造方法 | |
Yusof et al. | Design and materials development of automotive crash box: a review | |
US20210339802A1 (en) | Apparatus and methods for additively manufactured structures with augmented energy absorption properties | |
Shen et al. | Reducing the rebound effect in micro-scale laser dynamic flexible forming through using plasticine as pressure-carrying medium | |
JP3687475B2 (ja) | 立体形状物体の造形方法 | |
EP3115181A1 (en) | Method for producing three-dimensional molded article | |
JP6338305B1 (ja) | 支持部材、造形モデル生成装置、制御装置、および造形物の造形方法 | |
Kumar | Additive Manufacturing Classification | |
Dharmaraj et al. | Crashworthiness unit cell design investigation for energy absorption analysis | |
Wu et al. | Studies on impact performance of gradient lattice structure applied to crash box | |
CN104843068B (zh) | 车架碰撞安全性的优化方法以及车架、车辆 | |
JP2020117755A (ja) | クラッシュボックスの製造方法 | |
Wan et al. | Energy absorption characteristics of TPMS-filled square tubes under quasi-static axial crushing | |
CN109070223A (zh) | 一种用于制造三维对象的方法和设备 | |
JP6513094B2 (ja) | クラッシュ破壊時の材料の挙動のモデリング | |
Levatti et al. | Computational methodology for optimal design of additive layer manufactured turbine bracket | |
Malik | Analysis of impact attenuator of the student formula |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200428 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20210217 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210302 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210402 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210629 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210719 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20210914 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210927 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 6962139 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |