How to Find the Formula of the Reaction Force of the Support
The calculation formula of the bearing reaction mainly included the equilibrium equation and the moment equation. When calculating the reaction force of the support, the equilibrium equation of the object was usually divided into two equations: the horizontal direction and the vertical direction. For the balance equation in the horizontal direction, the formula, F x = 0, can be used. This formula means that the total force of all forces acting on the object in the horizontal direction is zero. When calculating, all the horizontal forces on the object (including external forces and support reactions) need to be added. At the same time, when using the moment equation, the couple relationship between the support reaction force and other forces should be considered. According to the specific force situation of the structure, the relevant equations should be listed, and then the support reaction force should be obtained by solving the equation. For example, in some structures, if the support reaction forces FA and FO form a couple in opposite directions, it is necessary to list the equation and solve it according to the overall force balance. For the case of structural external force balance, such as the conditions of x=0, y=0, etc., can also be used to solve the support reaction force. For example, in the framework structure, the support reaction force can be obtained by the method of x=0 to get XA=0, y=0 to get Ya+Yb=4P, and then the load and shape are symmetrical to know Ya=Yb= 2P. Read more exciting novels for free
What is the formula for the reaction force of the support in structural mechanics?
For a simply supported beam, the static equilibrium could be used to calculate the support reaction force, that is, in the vertical direction, there is always an equation of F = 0, and for the hinged point, there is a equation of M = 0. For the continuous beam, rigid frame and other static indeterminate structures, it should be calculated by force method or displacement method. The calculated vertical force is the reaction force of the support. The specific calculation of the reaction force of each support is the calculated vertical force of the support divided by the number of supports. In addition, the formula for calculating the reaction force of the support was also: Ri + Ri = P (where P was the external force, Ri and Ri were the reaction force of the support). For the frame structure, if the external force of the structure is balanced, then the equation of x=0 is xA=0; the equation of y=0 is Ya+Yb=4P (where 4P is the sum of external force, Ya and Yb are the reaction force of the support). By using the load and shape symmetries, Ya=Yb= 2P. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the reaction force of the support in structural mechanics?
For the solution of the support reaction force of a static structural beam, the following methods can be used: Remove a support (such as support A) and replace it with an external force.(That is, the reaction force of the support, the line of action, and the canceled support member are overlapped, and the direction is generally upward). Then, all the external forces are applied to the other support to calculate the bending moment (note the positive and negative signs). Since the static beam will not rotate, the total bending moment of all external forces (including the reaction force of the support A) to the other support should be "0", so the reaction force of a support can be calculated (note the + sign indicates that the reaction force of the support is in the same direction as the assumed reaction force of the support, otherwise it is opposite). Similarly, the reaction force of the other support could be obtained. In addition, after finding the reaction force of a support, the reaction force of another support could also be found under the condition that all the support reaction forces were equal to all the external forces. For a simply supported beam, static equilibrium could also be used. In the vertical direction, there was always the equation of F = 0, and for the hinged point, there was the equation of M = 0. For the continuous beam, rigid frame and other indeterminate structures, the force method or displacement method should be used to calculate the support reaction force. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula and Condition of the Reaction of the Acid and the Acid
Under normal circumstances, the reaction between the two could not be carried out directly. Because the lone pair of electrons of the oxygen of the alcoholic group was coupled with the aromatic ring, the reaction activity was very weak, and it could not be used to catalyze the ester reaction with the acid. To synthesize the ester, the reaction of an acid acid or an acid ether with the ether was usually done. For example, the reaction between the ether and the ether was: C6H50H +(CH3CO) 2O = CH3COOC6H5 + CH3COON. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula for the Production of Water by Water Reaction
以下是几种水解制氢的反应式： 1. 铝水反应制氢： - \(2Al +4H_{2}O = 2AlO(OH)+3H_{2}\uparrow\) - \(2Al + 6H_{2}O=2Al(OH)_{3}+3H_{2}\uparrow\) 2. 硼氢化钠催化水解制氢：\(NaBH_{4}+2H_{2}O\stackrel{催化剂}{=\!=\!=}4H_{2}+NaBO_{2}\) <a href="/?from=ask_words" style="color:red" target="_blank">点击前往免费阅读更多精彩小说</a>
First Order Reaction Formula of the Reaction Rate
The first-order reaction rate equation was: r = -dt/dt = kc, and its integral form was: Where, a is the concentration of the reagent at the beginning of the reaction, c is the concentration of the reagent at time t, and k is the rate constant. The unit is the negative power of the time unit, such as s^{-1}, min^{-1}, h^{-1}, d^{-1}, etc. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula of Substitution Reaction for the addition reaction of organic substances
Additional reaction: - The addition reaction of ethene and Bromine: <<CH2 = CH2 + Br2> - The addition reaction of ethene and hydrogen bromidate was as follows: <CH2 = CH2> - Under certain conditions, addition reactions could also occur between ethene, hydrogen, and water. Since the chemical properties of ethyne (carbon-carbon triple bond) were similar to that of alkene (carbon-carbon double bond), similar addition reactions could also occur. - The aromatic ring can undergo an addition reaction with hydrogen (in the presence of a catalyst such as Ni). - Aldol groups can undergo a reduction reaction (addition reaction), such as: <anno data-annotation-id ="00000000 - 4c00 - 4c00 - 8c00 - 9c00 - 9c000b000000"> CH3CH20H </anno>. Substitution reaction: - The substitution reaction between methane and Cl2: CH4 + Cl2. - The substitution reaction of the aromatic ring: For example, the substitution reaction with the aromatic group using FeBr3 as a catalyst; the nitration reaction with the aromatic group using concentrated sulfuric acid under heating conditions (the hydrogen on the aromatic ring is replaced by the nitrogen group). - The substitution reaction of the halated carbon was as follows: <<CH3CH2Br2>+<NaBr2>>. - The substitution reaction of alcohol: <CH3CH20H>+<br>> longrightarrow <CH3CH2br>+<H2O>> - The ester's cleavage reaction (which can be seen as a substitution reaction):<CH3COOCH2CH3 + H2O> <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Alkane Oxidation Reaction Formula
The general reaction formula for the synthesis of alkyls is CnH2n + 2+(3n + 1)/2O2 = nCO2 +(n + 1)H2O. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula of Ester and Alkaline
The chemical equation of the reaction between ethvl acetateand soda is: CH3COOCH2CH3 + NaOH → CH3COONa + CH3CH20H. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula of the Alkaline Cell
The reaction formula for the molten NaI is: $2NaI +2Na + I2 $, and the reaction formula for the molten NaI solution is: $2NaI +2H2O +2NaOx + I2 + H2 $. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Formula of CaSO4 and CaCO3
The chemical equation of the reaction between calcium sulfuric acid (CaSO) and sulfuric acid (H ^CO) is: CaSO + H ^CO = CaCO + H ^SO. This was a metathesis reaction. During the reaction, the sulfuric acid ions (SO2) exchanged positions with the carbon dioxide ions (CO2) to form calcium carbonite and sulfuric acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>