B-20 - 日本大学理工学部

平成 24 年度 日本大学理工学部 学術講演会論文集
B-20
ࢣ࣮ࣈࣝᵓ㐀ࡢ⾪ᧁⓗᙇຊኚືୗࡢືⓗᇶᮏᛶ≧࡟㛵ࡍࡿᐇ㦂ⓗ◊✲
Experimental Study on Basic Dynamic Behavior Impact Characteristic of Cable Structure .
ࠉ‫⇃ۑ‬ᆏࡲ࠸ࠉᒸ⏣❶ࠉᐑ㔛┤ஓࠉ୰す୕࿴ࠉᩪ⸨බ⏨
*Mai Kumasaka , Akira Okada1, Naoya Miyasato1, Mitsukazu Nakanishi, Masao Saitoh2
3
Abstract : Generally, the tension structures are designed within the elastic stage, and it is rare to discuss the safety of
ultimate state and the dynamic characteristics considering slackness of string over the provided load level.Therefore, the
purpose of this paper is to understand the basic dynamic characteristic of a cable structure under impact of change of
tensile force experimentally.
≧ែࡢᢕᥱࡀᚲせ
チᐜࡋ࡚ࡶࡼ࠸
ᵓ㐀ࢩࢫࢸ࣒࡟ࡼࡗ࡚ࡣチᐜࡋ࡚ࡶࡼ࠸
Figure 1. Design Criteria Example for Tensile Structure
ືⓗእ஘
ᶓ᪉ྥ᣺ື
ึᮇᙇຊ
ᙇຊಖᣢ
7!7R
7 7 7 7R
↓ᛂຊ≧ែ
⦆ࡳࡢⓎ⏕
⾪ᧁⓗ
ᙇຊኚື኱
㐣኱࡞ᛂຊኚື
Figure 2. Dynamic Impact of Change of Tensile Force.
䝻䞊䝗䝉䝹
䝅䞁䝤䝹
㻔䃥㻞㼙㼙㻕
䝻䞊䝗䝉䝹
䜰䜲䝪䝹䝖
䝅䝱䝑䜽䝹
䝽䜲䝲䝻䞊䝥
䃥㻞㼙㼙
ᐃჾྲྀ௜㒊
䜺䜲䝗⏝
䝽䜲䝲
㻸㻩㻡㻜㻜㼙㼙
䜿䞊䝤䝹
䜽䝸䝑䝥
㻔䃥㻞㼙㼙㻕
ヨ㦂య➃㒊
䝅䝱䝑䜽䝹
㔜䜚
䜰䜲䝪䝹䝖
㔜ࡾྲྀ௜㒊
㼔
ⴠୗ㧗ࡉㄪ⠇
᮰
⦆⾪ᮦ
䕔䝃䞁䝥䝸䞁䜾࿘Ἴᩘ䚷
䚷㻞㻜㻜㻜㼗㻴㼦
䕔ヨ㦂య㛗䛥䚷䠨䠙㻡㻜㻜
Table 1. Material of specimen
㻣㽢㻣
㻿㼁㻿㻟㻜㻠
ᚄ㻌㼇䡉䡉㼉
◚᩿Ⲵ㔜㻌㼇䡇䠪㼉
㻞
᩿㠃✚㻌㼇䡉䡉㻌㼉
㻞
䝲䞁䜾ಀᩘ㻌㼇䠪㻛䡉䡉㻌㼉
™
Figure 3. Outline of Impact Experiment
㸯㸸᪥኱⌮ᕤ࣭ᩍဨ࣭ᘓ⠏ࠉ㸰㸸᪥኱ྡ㄃ᩍᤵࠉ㸱㸸᪥኱⌮ᕤ࣭ᩍဨ࣭ᾏᘓࠉ㸲㸸᪥኱⌮ᕤ࣭㝔㸦๓㸧࣭ᘓ⠏
113
ᯫᵓ୙Ᏻᐃ
ࢣ勖ࣈࣝ㝆అ
➃㒊㔠≀ࡢ㝆అ
௙ୖࡆ⭷ࡢ◚᩿
ᙇຊᾘኻ
㸦㛗ᮇ チᐜኚ఩࣭᣺ື
㸦㝈⏺⪏ຊタィ Ᏻ඲㝈⏺
ࠉ࣭ ḟタィ ᦆയ㝈⏺
㸦 ḟタィ タィ஦㇟
୰㛫ࢡࣛࣥࣉ⁥ࡾ
㸦ရ☜ἲ ࢣ勖ࣈࣝ௨እࡢ㒊ᮦ㝆అ
タィⲴ㔜
ᙎᛶ⠊ᅖ
ࡣࡌࡵ࡟
ࠉࢣ࣮ࣈࣝᵓ㐀ࡢタィࡣ஧ḟタィࣞ࣋ࣝࡢタィⲴ㔜
࡟ᑐࡋ࡚ࡶᙎᛶ⠊ᅖෆ࡛タィࡉࢀࡿࡇ࡜ࡀ୍⯡ⓗ࡛
࠶ࡾ⤊ᒁ⪏ຊࡢᢕᥱཬࡧ᝿ᐃࡉࢀࡓⲴ㔜ࣞ࣋ࣝ௨ୖ
ࡢⲴ㔜ୗ࡟࠾ࡅࡿᯫᵓࡢ≧ែࡸᏳ඲ᛶ࡟ࡘ࠸࡚ࡣㄽ
ࡌࡽࢀࡿࡇ࡜ࡣᑡ࡞࠸)LJ≉࡟ከ㞷ᆅᇦ࡟࠾࠸
࡚ࡣᢕᥱຊࡀ㐣኱࡜࡞ࡾࢡࣛࣥࣉ㔠≀ᑍἲཬࡧ
ࢣ࣮ࣈࣝᚄࡀቑ኱ࡍࡿഴྥ࡟࠶ࡿࡇࢀ࡟ᑐࡋ࡚ึ
ᮇᙇຊࡢపῶ࡟క࠺᢬ᢠ࣓࢝ࢽࢬ࣒ࡢኚ໬ᙇຊᾘኻ
ཬࡧࢡࣛࣥࣉ㔠≀ࡢ⁥ືࡀᯫᵓ࡟ཬࡰࡍᙳ㡪➼ࢆ᳨
ウࡍࡿࡇ࡜࡟ࡼࡾึᮇᙇຊཬࡧ㔠≀ࡢᢕᥱຊࡢపῶ
ࡀᮇᚅࡉࢀ࡚࠸ࡿᙇຊᾘኻ࡟ࡼࡿ⦆ࡳࡢⓎ⏕ࡣ㐣
኱࡞ᙇຊኚືࡀ⪃࠼ࡽࢀ㸦)LJ⾪ᧁⓗ࡞ᙇຊኚື
࡟ࡼࡿᯫᵓ࡬ࡢᙳ㡪>@⾪ᧁຊ࡟ࡼࡿࢡࣛࣥࣉ㔠≀ࡢ
⁥ືࡀሗ࿌ࡉࢀ࡚࠸ࡿ>@≉࡟㟼ⓗ࡟タィࡉࢀࡓᢕᥱ
ຊࢆᑟධࡋ࡚ࡶ᣺ືࡢᙳ㡪࡟ࡼࡾࢡࣛࣥࣉ㔠≀ࡀ⁥
ືࡍࡿྍ⬟ᛶࡀ࠶ࡿ >@ ௨ୖࡢⅬ࠿ࡽᮏ◊✲࡛ࡣ
ࢣ࣮ࣈࣝࡢ⦆ࡳ࡟క࠺⾪ᧁຊ࡟ࡘ࠸࡚ᐇ㦂ⓗ࡟ホ౯
ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡍࡿ
୍㒊ᮦ⮬⏤ⴠୗ⾪ᧁᐇ㦂
ࠉࢣ࣮ࣈࣝ㒊ᮦࡢ⾪ᧁ≉ᛶࢆᢕᥱࡍࡿࡓࡵ୍㒊ᮦࡢ
ࢣ࣮ࣈࣝࢆ⏝࠸࡚⮬⏤ⴠୗ⾪ᧁヨ㦂ࢆ⾜ࡗࡓᐇ㦂
ᴫせࢆ)LJヨ㦂యᮦᩱࢆWDEOH࡟♧ࡍ➃㒊ࡣࢩ
ࣥࣈࣝ࡜ࢡࣜࢵࣉࢆ⏝࠸࡚)LJE୧➃㒊ࡲ࡛
ࡢ㛗ࡉࡀPPࡢࡶࡢࢆ〇సࡋࡓ㔜ࡾࡣNJNJ࡜
ࡋࡑࢀࡒࢀࡢ఩⨨࢚ࢿࣝࢠ࣮PJKࡀ➼౯࡟࡞ࡿࡼ
࠺࡟ⴠୗ㧗ࡉKࢆㄪᩚࡋࡓヨ㦂᪉ἲࡣヨ㦂య࡟
㔜ࡾࢆྞࡾୗࡆࡑࡢୗ࡟ⴠୗ㧗ࡉㄪ⠇⏝ࡢ᮰ࢆᮏ
⨨ࡁ᮰ࡢୗࡢᯈࢆᙉไⓗ࡟ᘬࡁᢤࡁ᮰ࢆ඲࡚ྠ᫬
ಽࡍࡇ࡜࡛㔜ࡾࢆ⮬⏤ⴠୗࡉࡏࡿࡇ࡜࡛ヨ㦂య࡟⾪
ᧁⲴ㔜ࢆຍ࠼ࡓࢧࣥࣉࣜࣥࢢ࿘ἼᩘࡣN+]࡜ࡋ
⾪ᧁຊࡀ༑ศィ ࡛ࡁࡿ࿘Ἴᩘࢆ᥇⏝ࡋࡓヨ㦂య➃
㒊ࡢᢡࡾ㏉ࡋ㒊ศ࡟ࡣ࠶ࡽ࠿ࡌࡵ༳ࢆࡘࡅヨ㦂⤊஢
ᚋ࡟⁥ࡾࡢ ᐃࢆ⾜ࡗࡓ
平成 24 年度 日本大学理工学部 学術講演会論文集
Ⲵ㔜㼇䡇䠪㼉
㻌䕰㟼ⓗᖹᆒ◚᩿Ⲵ㔜䚷㻟㻚㻠㻝㼗㻺
table2. Parameter of Experiment
䠂
㼔㻌㼇㼙㼙㼉
㼙㼓㼔
㻖㻝㻕
㻝㻢㼗㼓㼒
㻢
㻣㻡
㻝㻞㻜㻜㼓
㻠
㻡㻜
㻤㻜㻜㼓
㻤
㻝㻜㻜
㻝㻢㻜㻜㼓
㻝㻜
㻞㻜
㻤㻜㻜㼓
㻠㻜㼗㼓㼒
㻝㻡
㻟㻜
㻝㻞㻜㻜㼓
㻞㻜
㻠㻜
㻝㻢㻜㻜㼓
ᮏ┠
N1
㻌䕧つ᱁◚᩿Ⲵ㔜䚷㻞㻚㻤㻠㼗㻺
㻖㻝㻕
ᮏ┠
N1
䛿㻘ⴠୗ㧗䛥㼔㻔㼙㼙㻕㻛ヨ㦂య㛗䛥䠄㻸㻩㻡㻜㻜㼙㼙㻕㽢㻝㻜㻜䠂䜢♧䛩㻚
ᐇ㦂⤖ᯝ
㟼ⓗヨ㦂࡜◚᩿Ⲵ㔜ࡢẚ㍑
ࠉ࣡࢖࣮ࣖࣟࣉࡢ㟼ⓗ◚᩿Ⲵ㔜࡜ࡢẚ㍑ࢆ⾜࠺ࡓࡵ
࢔࣒ࢫ࣮ࣛヨ㦂ᶵ࡟ࡼࡿ㟼ⓗᘬᙇヨ㦂ࢆᮏᐇ᪋ࡋࡓ
)LJ㟼ⓗ◚᩿Ⲵ㔜࡜⾪ᧁ◚᩿Ⲵ㔜ࡣ࠸ࡎࢀࡶつ
᱁◚᩿Ⲵ㔜ࡼࡾࡶ㧗࠸್ࢆ♧ࡋࡓ࡞࠾⾪ᧁᐇ㦂࡟
ࡼࡾ◚᩿ࡋࡓⲴ㔜)LJNJIJࡶ㟼ⓗ࡞ᐇ㦂
್࡜㏆࠸್ࢆ♧ࡋࡓ
ⴠୗ㧗ࡉ࡜఩⨨࢚ࢿࣝࢠ࣮࡟ࡼࡿ㐪࠸)LJ
ࠉNJINJIඹ࡟ⴠୗ㧗ࡉࡀ㧗ࡃ࡞ࡿ࡯࡝ᙇຊࡀ኱
ࡁࡃ࡞ࡿഴྥࡀ☜ㄆࡉࢀࡓ➼౯ࡢ఩⨨࢚ࢿࣝࢠ࣮㔞
࡛୧⪅ࢆࡑࢀࡒࢀẚ㍑ࡍࡿ࡜್࡟ࡤࡽࡘࡁࡀ⏕ࡌ࡚
࠸ࡿࡶࡢࡢᖹᆒ್ࡣᴫࡡ㏆࠸್࡜࡞ࡗࡓ
ࠉᙎᛶࡦࡎࡳ࢚ࢿࣝࢠ࣮࡜ࡢẚ㍑
ࠉࢣ࣮ࣈࣝᵓ㐀ࡢືⓗ࡞ᙇຊኚືࡢ᭱኱್ࢆ᥎ ࡍ
ࡿࡓࡵࡢᇶ♏㈨ᩱࢆᚓࡿࡓࡵ࡟఩⨨࢚ࢿࣝࢠ࣮࡜ᙎ
ᛶṍ࢚ࢿࣝࢠ࣮ࡢẚ㍑ࢆ⾜ࡗࡓࡇࡇ࡛ᙎᛶṍ࢚ࢿ
ࣝࢠ࣮ࡢ⟬ᐃ࡟ࡣḟᘧࢆ⏝࠸࡚1࡜ࡋ࡚◚᩿ࡋࡓࡶ
ࡢࢆ㝖࠸ࡓᙇຊࡢ᭱኱್ࢆ௦ධࡋࡓ
N
E
A
L
ᮏ┠
N1
ኚ఩㼇㼙㼙㼉
㻜
㻡㻌
㻝㻜 㻌
㻞㻜 㻞㻡
Figure 4. Result Static Tensile Test
Ⓨ⏕ᙇຊ㼇㼗㻺㼉
㻌䕰㟼ⓗᖹᆒ◚᩿Ⲵ㔜䚷㻟㻚㻠㻝㼗㻺
㻌䚷つ᱁◚᩿Ⲵ㔜䚷㻞㻚㻤㻠㼗㻺
䕱
◚᩿
㼙㼓㼔㻩㻤㻜㻜㼓
NJI
NJI
Figure 5. Comparison
㻝㻞㻜㻜㼓
㻝㻢㻜㻜㼓
NJI
NJI
NJI
Energy
with
of Potential
㻟
㼇㻺䞉㼙㼙㼉
NJI
Height
Fall
㻟
㼁㼇㽢㻝㻜㻌㻌㻺䞉㼙㼙㼉
㻞㻡
㼁㼇㽢㻝㻜㻌㻌㻺䞉㼙㼙㼉
㻞㻡
㻞㻜
㻞㻜
㻝㻡
㻝㻡
㻝㻜
㻝㻜
㻡
㻡
㼙㼓㼔㻌㼇㽢㻝㻜㻟㻌㻺䞉㼙㼙㼉
㻜
㻜㻚㻣㻜㻌 㻜㻚㻥㻜㻌 㻝㻚㻝㻜㻌 㻝㻚㻟㻜㻌 㻝㻚㻡㻜㻌
ᙇຊ᭱኱್
ࣖࣥࢢಀᩘ
㠃✚
ヨ㦂య㛗ࡉ
㻝㻡 㻌
㼙㼓㼔㼇㽢㻝㻜㻟㻌㻺䞉㼙㼙㼉
㻜
㻜㻚㻣㻜㻌 㻜㻚㻥㻜㻌 㻝㻚㻝㻜㻌 㻝㻚㻟㻜㻌 㻝㻚㻡㻜㻌
NJINJI
Figure 6. Comparison of Elastic Strain Energy (U)
using Tensile Force with Potential Energy
)LJ࡟⤖ᯝࢆ♧ࡍᅗ୰ࡢᐇ⥺ࡣ㔜ࡾࡢ఩⨨࢚ࢿࣝ
ࢠ࣮ࡀ඲࡚ᙎᛶṍ࢚ࢿࣝࢠ࣮࡟ኚ᥮ࡉࢀࡓሙྜࡢ⌮
ㄽ್ࢆ⾲ࢃࡍᅗࡼࡾᙎᛶṍ࢚ࢿࣝࢠ࣮ࡣ඲యⓗ࡟
⌮ㄽ್ࡼࡾࡶ኱ࡁ࠸್ࡀᚓࡽࢀ࡚࠸ࡿࡀ㔜ࡾࡢⴠୗ
࢚ࢿࣝࢠ࣮࡜ඹ࡟ࡦࡎࡳ࢚ࢿࣝࢠ࣮ࡀቑຍࡍࡿഴྥ
ࡣ୍⮴ࡋ࡚࠸ࡿ
⾪ᧁἼᙧ࡟ࡼࡿ⪃ᐹ
ࠉWDEOH࡟♧ࡍᐇ㦂ࣃ࣓࣮ࣛࢱࡢ࠺ࡕ௦⾲ࡋ࡚
NJI㹥ࣔࢹࣝࡢ᭱኱ᙇຊ࡜⁥ࡾࡢᐇ㦂⤖ᯝࢆ
WDEOH࡟♧ࡍヨ㦂ࡣᅇ⾜࠸࣮ࣟࣉ◚᩿᫬1R
࡜㠀◚᩿ࡢ⾪ᧁἼᙧ1Rࢆ)LJ࡟♧ࡍ◚᩿᫬
࡟ࡣ࣮ࣟࣉࡀษࢀࡓ⾪ᧁ࡛ᅽ⦰ຊࡀຍࢃࡗ࡚࠸ࡿ
ࣆ࣮ࢡ᫬௜㏆ࡢV㛫ࢆྲྀࡾฟࡋ⁥ࡾ࡟ࡼࡿヲ⣽
࡞᳨ウࢆ⾜࠺ )LJE࡟♧ࡋࡓ㠀◚᩿Ἴᙧࡢ⁥ࡾ
ࡀ኱ࡁ࠸ヨ㦂య1R࡛ࡣ❧ࡕୖࡀࡾᚋᚤᑠ࡞ࡀ
ࡽ⁥ࡾࡀⓎ⏕ࡋ࡚࠾ࡾࡑࡢᚋ⁥ࡾ࡜㔮ྜ࠸ࢆ⧞ࡾ
㏉ࡋ࡞ࡀࡽࣆ࣮ࢡ࡟㐩ࡋ໙㓄ࡀ⦆ࡸ࠿࡟ῶ⾶ࡍࡿᛶ
≧ࡀᢕᥱࡉࢀࡓࣆ࣮ࢡᚋࡢഴࡁࡣ࠶ࡲࡾኚࢃࡽ࡞
࠸
㻠㻌௒ᚋ䛾᳨ウ
࣭ࡦࡎࡳ㏿ᗘࡸࢣ࣮ࣈࣝᚄ࡟ࡼࡿ㐪࠸࡟ࡘ࠸࡚ヲ⣽
࡟᳨ウࢆ⾜࠺
114
table 3. Results of 40kgf-1600g Model Experiment
㻌ヨ㦂య㻺㼛㻚
᭱኱ᙇຊ㻌㼇㼗㻺㼉
⁥䜚㻌㼇㼙㼙㼉
◚᩿
㻺㼛㻚㻝
㻟㻚㻞㻡
㻤
㻺㼛㻚㻞
㻟㻚㻞㻡
㻟
㻺㼛㻚㻟
㻟㻚㻝㻟
㻠
◚᩿
㻺㼛㻚㻠
㻟㻚㻟㻜
㻝
◚᩿
㻺㼛㻚㻡
㻟㻚㻝㻢
㻝㻚㻡
㻺㼛㻚㻢
㻟㻚㻠㻞
㻞㻚㻡
㻺㼛㻚㻣
㻟㻚㻡㻟
㻞
䈜ヨ㦂⤊஢ᚋ㻘⁥䜚䛜㻝㻜㼙㼙䜢㉸䛘䛯᫬Ⅼ䛷ヨ㦂య䜢஺᥮䛧䛯㻚
Ⓨ⏕ᙇຊ㼇㼗㻺㼉
㻟㻚㻡
㻌㻟㻚㻟㻜㼗㻺
㻞㻚㻡
⁥䜚㻝㼙㼙
Ⓨ⏕ᙇຊ㼇㼗㻺㼉
㻟㻚㻡
㻞㻚㻡
㻝㻚㻡
㻝㻚㻡
㻜㻚㻡
㻙㻜㻚㻡 㻜
◚᩿⟠ᡤ
㻜㻚㻡
㻝
㻝㻚㻡
㻞
㻙㻝㻚㻡
㻜㻚㻡
㻜
㻞㻚㻡
㻙㻜㻚㻡
>[email protected]
㻜㻚㻜㻞
㻜㻚㻜㻠
㻜㻚㻜㻢
>[email protected]
㻙㻝㻚㻡
㼍㻕㻌㻺㼛㻚㻠㻌◚᩿᫬䛾Ἴᙧ㻌
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Ⓨ⏕ᙇຊ㼇㼗㻺㼉
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㻙㻜㻚㻡 㻜
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㻞㻚㻡 㻙㻜㻚㻡 㻜
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㼎㻕㻌㻺㼛㻚㻝㻘㻢㻌㠀◚᩿᫬䛾Ἴᙧ㻌
Figure 7. Dynamic behavior of Tensile (Impact Experiment)
࠙ཧ⪃ᩥ⊩ࠚ
>@Ᏻ୪ᒸ⏣ᐑ㔛ᩪ⸨㸸ࠕࢸࣥࢭࢢࣜࢵࢡ࣭ࢱ࣮࣡ࡢᙇຊᾘኻ᫬࡟࠾ࡅࡿືⓗᣲື࡟㛵
ࡍࡿᇶ♏ⓗ◊✲ࡑࡢࡑࡢࡑࡢ$,-኱఍㛵ᮾ
>@㉥ᫍᒸ⏣ᐑ㔛ᩪ⸨㸸ࠕࢣ࣮ࣈࣝࢡࣛࣥࣉ㔠≀㒊ࡢ⁥ືࢆ⪃៖ࡋࡓࢸࣥࢭࢢࣜࢵࢡ࣭
ࢱ࣮࣡ࡢᆅ㟈᫬ᛂ⟅ᛶ≧࡟㛵ࡍࡿᇶ♏ⓗ◊✲ࡑࡢࡑࡢࡑࡢ$,-኱఍ᮾᾏ