What platform is DDAM pool
Here are three poems, no poem Title
1, children under the age of 16, causing trouble and trouble outside
parents should bear civil liability for beating, scolding and demanding money and property
the students are in charge of the school, and the students are in charge of their families
parents should take care of the illegal activities on the way
The general principles of civil law have limits on whether the responsibility should be borne by oneself or notthe students start from primary school, and the school parents take the responsibility
all kinds of laws can not be violated, and those who break the law will be punished with great regret
it is wise to learn more law when you are a student and enter the society
legal system story:
the disabled mother is seriously ill in bed, her father is an ordinary worker, and her 15-year-old son, Xiaogang, is a class cadre. Xiao Gang sees the difficulties in his family. He knows the importance of money to his mother and the whole family
ring the summer vacation, a child studying in a work study school in the neighborhood found Xiao Gang and told him that there was a way to get money, and assured him that as long as he mixed with him, he would make a fortune. Xiaogang, who is filial, is wavering, longing for "if I can get a lot of money, I can operate on my mother.". Two people a total, the goal is locked in Xiaogang a very rich primary school classmate Mingming
so they make an excuse to play with Mingming, and Xiaogang knocks on Mingming's door. After the two and a half year old children went in, in the presence of their parents, the next door child took out the kitchen knife prepared in advance and announced loudly: "robbery, take out the money!" Mingming's father subed him, and Xiao Gang, who was stupid on the spot, was sent to the police station
uncle police advised everyone to study the legal knowledge seriously, learn from Xiao Gang, study the legal knowledge seriously, and don't go astray
DDAM (dynamic design analysis method) is a specific type of spectrum defined by the U.S. Navy laboratory, which is used to analyze the impact resistance of marine equipment. In other words, DDAM was invented by the U.S. naval laboratory
The proction of DDAM is e to the development of mechanical procts and equipment in the direction of high speed, precision and lightweight, the increasingly complex proct structure, and the higher requirements for its working performance. The design method is proced to meet the requirements of good static and dynamic characteristics, low vibration and low noise of machinerydynamic analysis and design is a modern design method based on cybernetics, which is to analyze and design the machinery according to the functional requirements and design criteria of the design object under certain dynamic load conditions and according to the analysis method and experimental method of structural dynamics
extended data:
the main theoretical basis of dynamic analysis is modal analysis and modal synthesis theory. The main methods used are: finite element analysis method, model test method and transfer function analysis method
The finite element method has the characteristics of high accuracy, strong adaptability and unified calculation format, so it is widely used The model test method can reveal the dynamic characteristics of the mechanism system by analyzing and processing the test signals. However, the experimental method without using the dynamic model can only get the direction guidance of the improved design, and can not quantitatively show the improvement details of the design Transfer function analysis method is the core content of dynamic analysis and design method. Because the transfer function can be used to study the dynamic process of the system with zero initial condition under the action of input signal without solving the differential equation. At the same time, it can also study the influence of the changes of system parameters or structural parameters on the dynamic process. Therefore, the analysis and research process is greatly simplified On the other hand, the requirement of system performance can be transformed into the requirement of system transfer function, and the various characteristics of the system can be organically combined with the mathematical model to make the comprehensive design easy to realize