Research Overview: This study addresses technical challenges in the field of automotive assembly and key component technology. With the support of Shanghai Huizhong Automobile Manufacturing Co., Ltd., the project focused on disc brakes to tackle the issue of brake shudder, achieving core technological results in the application foundation and engineering practice of brake vibration. The innovative achievements of the project mainly include: establishing a systematic and complete set of engineering methods and processes for diagnosing the sources of disc brake shudder, identifying transmission paths, and evaluating vibration responses based on road tests; developing a systematic and complete set of bench test methods for disc brake shudder using a brake dynamometer, analyzing the mechanisms and contribution rates of thickness differences and end face runout of the brake disc causing fluctuations in braking torque and brake pressure. Using the theory of multi-body system dynamics, a dynamic model of the transmission path of brake shudder was established. The vibration isolation effect of rubber bushings was analyzed. The dynamic models of single-point and multi-point contact brakes were established using friction vibration theory, which can predict the phenomenon of brake chatter. A finite element model for thermal-mechanical coupling analysis of disc brakes was established, and the effects of thermal-mechanical coupling in brakes and its influencing factors were analyzed. For the first time, engineering control standards for end face runout and thickness difference processing and assembly of the studied disc brakes were established, achieving significant control effects on brake chatter. Technical indicators: First, research methods for road reproduction tests of braking chatter from problematic vehicles and bench reproduction tests of brake chatter from problematic brakes were developed, forming a complete set of systematic and standardized road and test bench methods to complete the diagnosis of vibration sources, identification of transmission paths, and determination of key influencing factors for vehicles with braking chatter; second, completed the whole vehicle braking chatter, brake tremor, The computer simulation analysis of the thermal-mechanical coupling dynamics of brakes has established the capability for virtual design and system development. Sensitivity analysis methods have provided direction for proposing effective control measures for problem vehicles and problematic brakes; third, through the analysis of actual vehicle structural characteristics, test analysis of problematic brake geometric features, testing analysis of brake geometry features, practical investigation and analysis of brake production precision control standards, and assembly process and control standards of brake assemblies, practical control standards and maintenance measures for brake design, processing, assembly, and maintenance are proposed: The research results of the project have been applied to Shanghai Volkswagen's whole vehicle enterprises, Shanghai Huizong Automobile Manufacturing Co., Ltd., and Shanghai Volkswagen authorized repair stations. Shanghai Huizong Automobile Manufacturing Co., Ltd. has adopted new processing and assembly control standards. The probability of vehicle brake shudder failure has been reduced to about 10% of the original, bringing significant economic benefits. After adopting new standards for brake disc maintenance and replacement, repair stations have reduced the likelihood of prematurely scrapping brake discs that are still in good condition due to blind replacements. Furthermore, this research achievement can be applied to win-win situations for vehicle manufacturers, component companies, and maintenance service departments, achieving both good economic and social benefits.