5.1. Khái niệm chung (1)
1. Định nghĩa
Thanh chịu xoắn thuần túy
là thanh mà trên các mặt
cắt ngang của nó chỉcó
một thành phầnứng lực là
mô men xoắn Mznằm
trong mặt phẳng vuông
góc với trục thanh.
Ví dụ: Các trục truyềnđộng, các
thanh trong kết cấu không gian,…
Ngoại lực gây xoắn: mô
men tập trung, mô men
phân bố, ngẫu lực trong
mặt cắt ngang
![Bài giảng Sức bền vật liệu Chương 6: Trường ĐH SPKT (ĐH Đà Nẵng) [Mới nhất]](https://cdn.tailieu.vn/images/document/thumbnail/2026/20260303/zinedinezidane06/135x160/58241772685109.jpg)
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