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yas_mal's profile
まる
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@yas_mal

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@yas_mal

会社員。

東海地方
Joined February 2010

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    まる‏ @yas_mal 14h14 hours ago

    「ガラスに養生テープを貼ると、応力集中して、かえって割れやすくなる」という話、「そんな馬鹿な…」と数値計算してみたが、案の定、そんなことはなかった。 (図の色付けはミーゼス応力で、カラーレンジは同一。最も応力が強い赤色が、テープあり計算では薄くなっている)pic.twitter.com/3FYEYZpMeP

    5:16 AM - 11 Oct 2019
    • 2,085 Retweets
    • 2,184 Likes
    • pa 陰キャ高校生 ふじ ZORAC@混沌の侵略に敗走中 すみちゃん 泰平グミカンパニー ▽なみへい は キ ⭕️ リ10/20一般参加
    8 replies 2,085 retweets 2,184 likes
      1. New conversation
      2. まる‏ @yas_mal 14h14 hours ago

        効果の方向性を見るためだけのアバウトな計算なので、計算の精度は不明。本当に、コンターに出るほど大きな差があるかは断言できない。 でも、逆効果なんてことはないのは断言できる。

        2 replies 135 retweets 133 likes
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      3. まる‏ @yas_mal 2h2 hours ago

        よし、効果があることも確認できたことだし、養生テープを貼るか!…とカーテンを開けたら、既に貼ってあった。 …いつの台風のときのだろう…汗

        1 reply 48 retweets 135 likes
        Show this thread
      4. End of conversation
      1. New conversation
      2. 三次元大介 🇯🇵‏ @3_Jigen_daisuke 10h10 hours ago
        Replying to @yas_mal

        こんばんは。こちらの考えは如何でしょうか。pic.twitter.com/2YDpwsRuFu

        2 replies 5 retweets 6 likes
      3. 三次元大介 🇯🇵‏ @3_Jigen_daisuke 5h5 hours ago
        Replying to @3_Jigen_daisuke @yas_mal

        すみません、図がわかりづらく。😭これは一枚のガラスを拡大したものです。真ん中の部分にだけテープを貼る(米字の中心)と、周囲の貼っていない部分にどのように力が加わるのかを考えたものです。当方、素人なので合っているのかわからず。。

        0 replies 1 retweet 3 likes
      4. End of conversation
      1. New conversation
      2. なごやJA125/JS2GTS‏ @nagoya_JA125 2h2 hours ago
        Replying to @yas_mal @YOSHIHARA_EVD

        この養生テープは割れ防止ではなく、割れた際の破片の飛び散りを防ぐ(低減させる)ものだと思っております

        1 reply 8 retweets 12 likes
      3. なごやJA125/JS2GTS‏ @nagoya_JA125 2h2 hours ago
        Replying to @nagoya_JA125 @yas_mal @YOSHIHARA_EVD

        EVDさん巻き込みごめんなさい🙏

        1 reply 0 retweets 1 like
      4. 吉原 春明 (JP1EVD/0)‏ @YOSHIHARA_EVD 2h2 hours ago
        Replying to @nagoya_JA125

        お気になさらず。いろいろな意見が見れて興味深いので。

        0 replies 0 retweets 2 likes
      5. End of conversation
      1. 市民ウェストン氏‏ @HuFmy 1h1 hour ago
        Replying to @yas_mal @mipoko611

        テープの効能は飛散防止ですが、この比較を見る限りほとんど差がないというか、むしろ(応力が)分散しているようにも思えますネ。

        0 replies 2 retweets 1 like
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      1. HOGE!‏ @hoge_mix 2h2 hours ago
        Replying to @yas_mal @h_okumura

        外側に貼るより中側に貼る方がテープにテンションがかかる分強くなるような気がするけど、素人考えなのかな。

        0 replies 1 retweet 1 like
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      1. 竹渕瑛一‏ @GRGSIBERIA 21m21 minutes ago
        Replying to @yas_mal

        養生テープが減衰効果をもたらすが結局のところ高次のモード振動に対しては貼ってないから無力なのでは? 問題が非常に難しいのでD進して問題を解決しよう

        0 replies 1 retweet 1 like
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      1. New conversation
      2. Ryosuke Hata‏ @hattan0523 16m16 minutes ago
        Replying to @yas_mal

        ガラスは脆性材なので最大主応力のコンターも見たいです。

        1 reply 0 retweets 1 like
      3. Ryosuke Hata‏ @hattan0523 4m4 minutes ago
        Replying to @hattan0523 @yas_mal

        あと、テープの部分に応力が0なのは気持ち悪いんですがどんな拘束条件にしたのでしょうか?

        0 replies 0 retweets 1 like
      4. End of conversation
      1. coin‏ @coinred 8h8 hours ago
        Replying to @yas_mal

        テープより強度のある材質であれば応力が分散して割れにくくなりそうですね。

        0 replies 0 retweets 0 likes
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