JP2003261023A - Hollow shape - Google Patents

Hollow shape

Info

Publication number
JP2003261023A
JP2003261023A JP2002062238A JP2002062238A JP2003261023A JP 2003261023 A JP2003261023 A JP 2003261023A JP 2002062238 A JP2002062238 A JP 2002062238A JP 2002062238 A JP2002062238 A JP 2002062238A JP 2003261023 A JP2003261023 A JP 2003261023A
Authority
JP
Japan
Prior art keywords
rib
face plate
arc
vicinity
arcs
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.)
Withdrawn
Application number
JP2002062238A
Other languages
Japanese (ja)
Inventor
Hideyuki Nakamura
英之 中村
Toshiaki Makino
俊昭 牧野
Masaaki Shigeyama
正明 茂山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2002062238A priority Critical patent/JP2003261023A/en
Publication of JP2003261023A publication Critical patent/JP2003261023A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Landscapes

  • Body Structure For Vehicles (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight hollow shape of high rigidity and high strength. <P>SOLUTION: Arcs R3 and R4 are formed on both sides in the thickness direction of a rib 13 in the vicinity of a node area 20 between a face plate 12 and the rib 13 of the hollow shape. The rib 13 is smoothly connected to the arc R3. The diameter of R3 is equal to that of R4. The position in the longitudinal direction of the rib at a connection part 15 of the rib 13 to the arc R3 is substantially agreed with that in a connection part 16 of the rib 13 to the arc R4. When the out-of-plane shear load is applied to a structure, any large local deformation or any high local stress generated in the rib 13 in the vicinity of the node area 20 is reduced, and the rigidity and the strength of the structure are improved. This is performed by suppressing the bending deformation of the rib 13 in the vicinity of the node area 20 by adding the arcs R3 and R4 symmetric to each other across the axis of the thickness of the rib 13, and reducing the stress concentration generated in the rib 13 in the vicinity of the node area 20 by smoothly connecting the rib 13 to the arcs R3 and R4 of the large diameter. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、構造体を構成する
中空形材に関するものである。例えば、アルミニウム合
金製の鉄道車両や建築物等を構成する中空形材に好適で
ある。TECHNICAL FIELD The present invention relates to a hollow member constituting a structure. For example, it is suitable for a hollow shape member made of an aluminum alloy such as a railroad vehicle or a building.

【０００２】[0002]

【従来の技術】中空形材は、二枚の面板と該面板を接続
する複数のリブによって構成されている。この一例は、
特開平１１−５８５６４号公報に示されている。この文
献の図１には、中空形材の剛性と強度を向上させること
を目的とした面板とリブの結節領域に関する形状が示さ
れている。2. Description of the Related Art Hollow frame members are composed of two face plates and a plurality of ribs connecting the face plates. An example of this is
It is disclosed in JP-A-11-58564. FIG. 1 of this document shows the shape of the knot area of the face plate and the rib for the purpose of improving the rigidity and strength of the hollow shape member.

【０００３】[0003]

【発明が解決しようとする課題】中空形材から構成され
る構造体の一例として鉄道車両を考えた場合、中空形材
には主に引張り、面外曲げ、面外せん断の各荷重が単独
でもしくは複合して作用する。これらの荷重が作用した
ときの中空形材の変形や応力の発生状況は、作用する荷
重の種類、大きさやその組み合わせに依存する。When a railway vehicle is considered as an example of a structure composed of hollow frame members, the hollow frame members are mainly subjected to tensile, out-of-plane bending, and out-of-plane shear loads. Or it works in combination. The state of deformation and stress generation of the hollow frame when these loads are applied depends on the type and size of the applied load and the combination thereof.

【０００４】引張荷重や面外曲げ荷重が中空形材に作用
した場合には、面板とリブの結節領域近傍の面板に最大
応力が発生する。該部位に発生する局部的な大変形や高
応力が、構造体全体の剛性や強度を低下させる一因とな
っている。When a tensile load or an out-of-plane bending load acts on the hollow shape member, maximum stress is generated in the face plate near the knot region of the face plate and the rib. The large local deformation and high stress that occur in the region are one of the factors that reduce the rigidity and strength of the entire structure.

【０００５】面外せん断荷重が中空形材に作用した場合
には、面板とリブの結節領域近傍のリブに最大応力が発
生する。該部位に発生する局部的な大変形や高応力が、
構造体全体の剛性や強度を低下させる一因となってい
る。When the out-of-plane shear load acts on the hollow shape member, maximum stress is generated in the rib near the knot region between the face plate and the rib. Local large deformation and high stress that occur in the part,
This is one of the factors that reduce the rigidity and strength of the entire structure.

【０００６】ここで、前記特開平１１−５８５６４号公
報では、面板とリブの結節領域におけるオフセット量を
適切な値にすることで中空形材の剛性と強度を向上させ
ている。Here, in the above-mentioned Japanese Patent Laid-Open No. 11-58564, the rigidity and strength of the hollow frame member are improved by setting the offset amount in the knot region of the face plate and the rib to an appropriate value.

【０００７】しかし、我々の研究によれば、理想的な寸
法であるオフセット量を０とした場合でも、依然として
面板とリブの結節領域近傍の面板やリブに局部的な大変
形や高応力が発生し、構造体の剛性や強度を低下させて
いる。However, according to our research, even when the offset amount, which is an ideal dimension, is set to 0, large local deformation and high stress still occur in the face plate and the rib near the nodal region of the face plate and the rib. However, the rigidity and strength of the structure are reduced.

【０００８】本発明の目的は、軽量でかつ高剛性、高強
度な中空形材を提供することにある。An object of the present invention is to provide a hollow shape member which is lightweight and has high rigidity and high strength.

【０００９】[0009]

【課題を解決するための手段】上記目的は、二枚の面板
と、二枚の面板の間をトラス状に接続した複数のリブ
と、から構成された中空形材同士を接合した構造体にお
いて、前記面板と前記リブが接続される部位である結節
領域近傍の前記リブ（または一方の面板）の板厚は該リ
ブ（面板）の他の部位の板厚と比較して厚くなってお
り、該厚くなった部分は前記リブ（面板）の両面に厚く
なっており、該両面の厚くなった部分の厚さは両面にお
いて実質的に同一であり、該厚くなった部分の端部と前
記リブ（面板）とはそれぞれ円弧で接続されており、該
円弧は前記リブ（面板）側に向けて凸の円弧状であり、
該円弧によって前記リブ（面板）の板厚は前記結節領域
に近づくに従って徐々に増加しており、前記二つの円弧
は径が実質的に等しいこと、によって達成できる。[Means for Solving the Problems] The above object is to provide a structure in which hollow frame members are joined, each of which is composed of two face plates and a plurality of ribs connecting the two face plates in a truss shape. The plate thickness of the rib (or one face plate) in the vicinity of the nodule region, which is the part where the face plate and the rib are connected, is thicker than the plate thickness of the other part of the rib (face plate), The thickened portions are thickened on both sides of the rib (face plate), the thicknesses of the thickened portions on both sides are substantially the same on both sides, and the ends of the thickened portions and the ribs are the same. (Face plate) is connected to each by an arc, the arc is a convex arc shape toward the rib (face plate) side,
The thickness of the rib (face plate) gradually increases as it approaches the knot region due to the arc, and the two arcs have substantially the same diameter.

【００１０】[0010]

【発明の実施の形態】本発明の一実施例を図１〜３によ
り説明する。車体１００は、床を構成する台枠１０１、
屋根を構成する屋根構体１０２、側面を構成する側構体
１０３、長手方向の端部を構成する妻構体１０４から成
る。台枠１０１、屋根構体１０２、側構体１０３は、そ
れぞれ複数の押出形材を接合することにより製作され
る。押出形材の長手方向は、車体の長手方向と一致して
いる。押出形材は、アルミニウム合金製である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The vehicle body 100 includes an underframe 101 that constitutes a floor,
The roof structure 102 constitutes a roof, the side structure 103 constitutes a side surface, and the end structure 104 constitutes an end portion in the longitudinal direction. The underframe 101, the roof structure 102, and the side structure 103 are manufactured by joining a plurality of extruded profiles. The longitudinal direction of the extruded profile corresponds to the longitudinal direction of the vehicle body. The extruded profile is made of aluminum alloy.

【００１１】側構体１０３を構成する中空形材１０の構
成を説明する。他の中空形材も同様の構成である。The structure of the hollow frame member 10 constituting the side structure 103 will be described. The other hollow frame members have the same structure.

【００１２】中空形材１０は、二枚の面板１１，１２と
トラス状に配置した複数のリブ１３から成る。二枚の面
板１１，１２は、実質的に平行である。リブ１３のピッ
チは、同一である。面板１１，１２の板厚は、同一であ
る。リブ１３の板厚は、同一である。The hollow frame member 10 is composed of two face plates 11 and 12 and a plurality of ribs 13 arranged in a truss shape. The two face plates 11 and 12 are substantially parallel. The ribs 13 have the same pitch. The face plates 11 and 12 have the same plate thickness. The ribs 13 have the same plate thickness.

【００１３】面板１２とリブ１３の結節領域２０近傍の
構成を説明する。面板１１とリブ１３の結節領域近傍も
同様の構成である。The structure of the face plate 12 and the rib 13 near the knot region 20 will be described. The face plate 11 and the rib 13 have the same structure in the vicinity of the knot region.

【００１４】面板１２とリブ１３の間には円弧Ｒ１が存
在する。リブ１３とリブ１３の間には、円弧Ｒ２が存在
する。リブ１３と円弧Ｒ１の間には、円弧Ｒ３が存在す
る。リブ１３と円弧Ｒ２の間には、円弧Ｒ４と直線１４
が存在する。直線１４は円弧Ｒ２と円弧Ｒ４の間に位置
する。直線１４は、リブ１３と実質的に平行であり、リ
ブ１３の内面側（中空形材１０の板厚方向中央側）の直
線よりも内面側に位置している。面板１２、円弧Ｒ１、
Ｒ３、リブ１３は、滑らかに接続されている。リブ１３
と円弧Ｒ４は、滑らかに接続されている。直線部１４と
円弧Ｒ２は、滑らかに接続されている。円弧Ｒ３は、円
弧Ｒ１より径が大きい。円弧Ｒ４は、円弧Ｒ２より径が
大きい。円弧Ｒ３と円弧Ｒ４は、径が等しい。リブ１３
と円弧Ｒ３の接続部１５とリブ１３と円弧Ｒ４の接続部
１６におけるリブ１３の長手方向の位置は、実質的に一
致する。An arc R1 exists between the face plate 12 and the rib 13. An arc R2 exists between the ribs 13. An arc R3 exists between the rib 13 and the arc R1. Between the rib 13 and the arc R2, the arc R4 and the straight line 14
Exists. The straight line 14 is located between the circular arc R2 and the circular arc R4. The straight line 14 is substantially parallel to the rib 13 and is located on the inner surface side with respect to the straight line on the inner surface side of the rib 13 (center side in the plate thickness direction of the hollow profile 10). Face plate 12, arc R1,
The R3 and the rib 13 are smoothly connected. Rib 13
And the arc R4 are smoothly connected. The straight line portion 14 and the arc R2 are smoothly connected. The arc R3 has a larger diameter than the arc R1. The arc R4 has a larger diameter than the arc R2. The arc R3 and the arc R4 have the same diameter. Rib 13
The positions of the ribs 13 in the connecting portion 15 of the arc R3 and the rib 13 and the connecting portion 16 of the arc R4 substantially coincide with each other.

【００１５】以上の形状をした中空形材から構成される
構造体に面外せん断荷重が作用した場合、面板１２とリ
ブ１３の結節領域２０近傍のリブ１３に発生する局部的
な大変形や高応力が低減されるため、構造体の剛性と強
度が向上する。この主な理由は、円弧Ｒ３、Ｒ４をリブ
１３の板厚中心軸に対象な形状として付加することによ
り結節領域２０近傍のリブ１３の曲げ変形が抑制された
こと、リブ１３と径の大きな円弧Ｒ３、Ｒ４を滑らかに
接続することにより結節領域２０近傍のリブ１３に発生
する応力集中が低減されたこと、にあると考える。When an out-of-plane shear load is applied to a structure composed of the hollow shape members having the above-described shapes, a large local deformation or a high local deformation occurs in the rib 13 near the knot region 20 between the face plate 12 and the rib 13. Since the stress is reduced, the rigidity and strength of the structure are improved. The main reason for this is that bending deformation of the rib 13 in the vicinity of the knot region 20 is suppressed by adding the arcs R3 and R4 to the plate thickness center axis of the rib 13 as a symmetrical shape. It is considered that the stress concentration generated in the rib 13 in the vicinity of the knot region 20 is reduced by smoothly connecting R3 and R4.

【００１６】本発明の他の実施例を図４により説明す
る。これは、図１〜３で示した実施例において、面板１
２とリブ１３の結節領域２０近傍の構成が異なる例であ
る。Another embodiment of the present invention will be described with reference to FIG. This is the face plate 1 in the embodiment shown in FIGS.
2 is an example in which the ribs 13 and the ribs 13 have different configurations in the vicinity of the knot region 20.

【００１７】面板１２とリブ１３の結節領域２０近傍の
構成を説明する。面板１１とリブ１３の結節領域近傍も
同様の構成である。The structure of the face plate 12 and the rib 13 in the vicinity of the knot region 20 will be described. The face plate 11 and the rib 13 have the same structure in the vicinity of the knot region.

【００１８】面板１２とリブ１３の間には、円弧Ｒ１が
存在する。リブ１３とリブ１３の間には、円弧Ｒ２が存
在する。面板１２と面板１２の間には、直線１４が存在
する。面板１２と円弧Ｒ１の間には、円弧Ｒ３が存在す
る。面板１２と直線１４の間には、円弧Ｒ４が存在す
る。直線１４は、面板１２と実質的に平行であり、面板
１２の外面側（中空形材１０の板厚方向外側）の直線よ
りも外面側に位置している。面板１２、円弧Ｒ３、Ｒ
１、リブ１３は、滑らかに接続されている。面板１２と
円弧Ｒ４は、滑らかに接続されている。円弧Ｒ３は、円
弧Ｒ１より径が大きい。円弧Ｒ３と円弧Ｒ４は、径が等
しい。面板１２と円弧Ｒ３の接続部１５と面板１２と円
弧Ｒ４の接続部１６における面板１２の長手方向の位置
は、実質的に一致する。An arc R1 exists between the face plate 12 and the rib 13. An arc R2 exists between the ribs 13. A straight line 14 exists between the face plates 12 and 12. An arc R3 exists between the face plate 12 and the arc R1. An arc R4 exists between the face plate 12 and the straight line 14. The straight line 14 is substantially parallel to the face plate 12, and is located on the outer surface side with respect to the straight line on the outer surface side of the face plate 12 (outer side in the plate thickness direction of the hollow profile 10). Face plate 12, arc R3, R
1. The ribs 13 are smoothly connected. The face plate 12 and the arc R4 are smoothly connected. The arc R3 has a larger diameter than the arc R1. The arc R3 and the arc R4 have the same diameter. The positions of the face plate 12 and the connecting portion 15 of the arc R3 and the connecting portion 16 of the face plate 12 and the arc R4 in the longitudinal direction of the face plate 12 substantially coincide with each other.

【００１９】以上の形状をした中空形材から構成される
構造体に引張荷重もしくは面外曲げ荷重が作用した場
合、面板１２とリブ１３の結節領域２０近傍の面板１２
に発生する局部的な大変形や高応力が低減されるため、
構造体の剛性と強度が向上する。この主な理由は、円弧
Ｒ３、Ｒ４を面板１２の板厚中心軸に対象な形状として
付加することにより結節領域２０近傍の面板１２の曲げ
変形が抑制されたこと、面板１２と径の大きな円弧Ｒ
３、Ｒ４を滑らかに接続することにより結節領域２０近
傍の面板１２に発生する応力集中が低減されたこと、に
あると考える。When a tensile load or an out-of-plane bending load is applied to the structure composed of the hollow shape members having the above-described shapes, the face plate 12 and the face plate 12 near the knot region 20 of the rib 13 are applied.
Since local large deformation and high stress that occur in the
The rigidity and strength of the structure are improved. The main reason for this is that the bending deformation of the face plate 12 in the vicinity of the knot region 20 is suppressed by adding the arcs R3 and R4 to the plate thickness center axis of the face plate 12 as a symmetrical shape. R
It is considered that the stress concentration generated in the face plate 12 in the vicinity of the nodule region 20 is reduced by smoothly connecting 3 and R4.

【００２０】上記図４の実施例は一方の面板１２の結節
領域の近傍の面板１２の板厚を増加させるものであった
が、両面の面板１１、１２の板厚を上記のように増加さ
せることができる。In the embodiment of FIG. 4 described above, the plate thickness of the face plate 12 in the vicinity of the knot region of the one face plate 12 is increased, but the plate thicknesses of the face plates 11 and 12 on both sides are increased as described above. be able to.

【００２１】本発明の技術的範囲は、特許請求の範囲の
各請求項に記載の文言あるいは課題を解決するための手
段の項に記載の文言に限定されず、当業者がそれから容
易に置き換えられる範囲に及ぶものである。The technical scope of the present invention is not limited to the wording described in each claim of the claims or the wording described in the section of means for solving a problem, and those skilled in the art can easily replace it. It covers a range.

【００２２】[0022]

【発明の効果】本発明によれば、中空形材に発生する局
部的な大変形や高応力を有効に低減でき、軽量で高剛
性、高強度な中空形材を提供できる。According to the present invention, it is possible to effectively reduce local large deformation and high stress generated in a hollow profile, and to provide a lightweight, high-rigidity, high-strength hollow profile.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例の結節領域近傍の断面図。FIG. 1 is a cross-sectional view in the vicinity of a nodule region according to an embodiment of the present invention.

【図２】本発明の一実施例の中空形材の断面図。FIG. 2 is a cross-sectional view of a hollow frame member according to an embodiment of the present invention.

【図３】鉄道車両の車体の斜視図。FIG. 3 is a perspective view of a vehicle body of a railway vehicle.

【図４】本発明の他の実施例の結節領域近傍の断面図。FIG. 4 is a cross-sectional view in the vicinity of a nodule region according to another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１０ 中空形材 １１，１２ 面板 １３ リブ １４ 直線 １５，１６ 接続部 ２０ 結節領域 Ｒ１、Ｒ２、Ｒ３、Ｒ４ 円弧 １００ 車体 １０１ 台枠 １０２ 屋根構体 １０３ 側構体 １０４ 妻構体 10 Hollow frame 11,12 face plate 13 ribs 14 straight lines 15,16 Connection 20 nodule area R1, R2, R3, R4 circular arc 100 car body 101 underframe 102 roof structure 103 side structure 104 wife structure

───────────────────────────────────────────────────── フロントページの続き (72)発明者 茂山 正明 山口県下松市東豊井794番地 株式会社日 立製作所笠戸事業所内   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masaaki Shigeyama             Higashi-Toyoi 794, Kudamatsu City, Yamaguchi Prefecture             At the Tate Manufacturing Kasado Works

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 二枚の面板と、二枚の面板の間をトラス
状に接続した複数のリブと、から構成された中空形材に
おいて、 前記面板と前記リブが接続される部位である結節領域近
傍の前記リブの板厚は該リブの他の部位の板厚と比較し
て厚くなっており、 該厚くなった部分は前記リブの両面に厚くなっており、
該両面の厚くなった部分の厚さは両面において実質的に
同一であり、 該厚くなった部分の端部と前記リブとはそれぞれ円弧で
接続されており、該円弧は前記リブ側に向けて凸の円弧
状であり、該円弧によって前記リブの板厚は前記結節領
域に近づくに従って徐々に増加しており、 前記二つの円弧は径が実質的に等しいこと、 を特徴とする中空形材。1. A hollow shape member composed of two face plates and a plurality of ribs connecting the two face plates in a truss shape, wherein the knot is a portion where the face plate and the rib are connected. The plate thickness of the rib near the region is thicker than the plate thickness of other portions of the rib, and the thickened portion is thicker on both sides of the rib,
The thicknesses of the thickened portions on both sides are substantially the same on both sides, and the ends of the thickened portions and the ribs are connected by arcs, respectively, and the arcs are directed toward the ribs. A hollow shape member having a convex arc shape, wherein the plate thickness of the rib gradually increases toward the knot region due to the arc, and the two arcs have substantially the same diameter. 【請求項２】 第１の面板と第２の面板と、該第１の面
板と第２の面板との間をトラス状に接続した複数のリブ
と、から構成された中空形材において、 前記面板と前記リブが接続される部位である結節領域近
傍の前記第１の面板の板厚は該面板の他の部位の板厚と
比較して厚くなっており、 該厚くなった部分は前記第１の面板の両面に厚くなって
おり、該両面の厚くなった部分の厚さは両面において実
質的に同一であり、 該厚くなった部分の端部と前記第１の面板とはそれぞれ
円弧で接続されており、該円弧は前記第１の面板側に向
けて凸の円弧状であり、該円弧によって前記第１の面板
の板厚は前記結節領域に近づくに従って徐々に増加して
おり、 前記二つの円弧は径が実質的に等しいこと、 を特徴とする中空形材。2. A hollow profile member comprising a first face plate, a second face plate, and a plurality of ribs connecting the first face plate and the second face plate in a truss shape, wherein: The plate thickness of the first face plate in the vicinity of the nodule region where the face plate and the rib are connected is thicker than the plate thickness of the other part of the face plate, and the thickened portion is the first part. One face plate is thick on both sides, and the thicknesses of the thickened portions on both sides are substantially the same on both sides, and the end of the thickened portion and the first face plate are arcuate. Connected, the arc is a convex arc shape toward the first face plate side, the plate thickness of the first face plate is gradually increased by the arc as it approaches the knot region, A hollow profile characterized in that the two arcs have substantially the same diameter.
JP2002062238A 2002-03-07 2002-03-07 Hollow shape Withdrawn JP2003261023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002062238A JP2003261023A (en) 2002-03-07 2002-03-07 Hollow shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002062238A JP2003261023A (en) 2002-03-07 2002-03-07 Hollow shape

Publications (1)

Publication Number Publication Date
JP2003261023A true JP2003261023A (en) 2003-09-16

Family

ID=28670575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002062238A Withdrawn JP2003261023A (en) 2002-03-07 2002-03-07 Hollow shape

Country Status (1)

Country Link
JP (1) JP2003261023A (en)

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