Patents by Inventor Tetsuya Arikawa

Tetsuya Arikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Contact force evaluation method
    Patent number: 10990712
    Abstract: There is provided a contact force evaluation method for evaluating a contact force against a supporting member of a tube bundle positioned in a fluid and supported by the supporting member, including a contact force setting step of setting a contact force of the tube bundle, a probability density function calculation step of calculating a probability density function of a reaction force received by the supporting member from the tube bundle in response to a predetermined input, using a vibration analysis model of the tube bundle and the supporting member, a probability calculation step of calculating a probability that a reaction force equal to or higher than the set contact force occurs, based on the calculated probability density function, and an evaluation step of evaluating the set contact force, based on the calculated probability.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: April 27, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Makoto Iwasaki, Kazuo Hirota, Shingo Nishida, Tetsuya Arikawa, Ryoichi Kawakami, Masaaki Katayama, Toshifumi Nariai, Kohei Yamamoto
  • CONTACT FORCE EVALUATION METHOD
    Publication number: 20190018921
    Abstract: There is provided a contact force evaluation method for evaluating a contact force against a supporting member of a tube bundle positioned in a fluid and supported by the supporting member, including a contact force setting step of setting a contact force of the tube bundle, a probability density function calculation step of calculating a probability density function of a reaction force received by the supporting member from the tube bundle in response to a predetermined input, using a vibration analysis model of the tube bundle and the supporting member, a probability calculation step of calculating a probability that a reaction force equal to or higher than the set contact force occurs, based on the calculated probability density function, and an evaluation step of evaluating the set contact force, based on the calculated probability.
    Type: Application
    Filed: January 16, 2017
    Publication date: January 17, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Makoto Iwasaki, Kazuo Hirota, Shingo Nishida, Tetsuya Arikawa, Ryoichi Kawakami, Masaaki Katayama, Toshifumi Nariai, Kohei Yamamoto