Method for calculating strength of longitudinal wall plate with opening

• Main Authors: CAO MINGZHE, CAI YONGMING, SHANG JIN, WANG GUANGSHUAI
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2016
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; PHYSICS

The invention relates to the field of aircraft structure design, and especially relates to a method for calculating strength of a longitudinal wall plate with an opening, so as to solve the problem that a strength calculation result of the existing longitudinal wall plate with a large opening is inaccurate and the efficiency is low. The calculation method comprises the following steps: judging whether the opening of the longitudinal wall plate satisfies a predetermined calculation condition; when the predetermined condition is satisfied, calculating an internal force of a predetermined section of an opening root; calculating stress of a predetermined section of the opening; amending the stress of the predetermined section; calculating Von Mises stress of an opening corner web according to the amended stress of the predetermined section; and comparing the amended stress of the predetermined section and the Von Mises stress of the corner web with a predetermined allowable stress value, and obtaining static stre