突发讣告！余寿文逝世，是重大损失

Core Viewpoint - The passing of Yu Shouwen, a prominent solid mechanics expert and former vice president of Tsinghua University, is a significant loss for Tsinghua University and the fields of mechanics and education in China [1][5]. Group 1: Academic Contributions - Yu Shouwen made substantial contributions to solid mechanics, particularly in fracture and damage mechanics, smart materials, and microscale mechanics, achieving internationally influential and original results [3]. - He published 7 monographs and over 400 academic papers, receiving multiple awards including two National Natural Science Awards and a Special Prize for National Science and Technology Progress [4]. - His research has been incorporated into national standards for safety assessment of defective pressure vessels, providing critical theoretical support for major engineering structures [3][4]. Group 2: Educational Impact - As a professor and doctoral advisor, Yu Shouwen trained numerous outstanding talents, many of whom became academicians and leaders in their fields [4]. - During his tenure as vice president of Tsinghua University, he implemented significant educational reforms, including the credit system and improvements in course construction and academic integrity [4]. - He was a key advocate for the development of engineering education research and certification systems in China, contributing to the country's entry into the Washington Accord [4].