أرسل هذا في رسالة قصيرة: Impact response of straight and curved beams subjected to mid-span impact

 _    _      ___                ______   _    _   
| || | ||   / _ \\    ____     /_   _// | \  / || 
| || | ||  | / \ ||  |    \\    -| ||-  |  \/  || 
| \\_/ ||  | \_/ ||  | [] ||    _| ||_  | .  . || 
 \____//    \___//   |  __//   /_____// |_|\/|_|| 
  `---`     `---`    |_|`-`    `-----`  `-`  `-`  
                     `-`