Building my House: Discover the most Common Mistakes Here

discover the common mistake

Conquering their own property is the goal of many people, and, in this process, many value personalization, choosing to create a project from scratch. However, when implementing these plans, it is normal for concerns to arise, such as: “I’m building my house, but I don’t know how to avoid problems”. After all, mistakes during the process can bring harm, making it essential to adopt some precautions so that this achievement is full of joys without the inconvenience and great worries. Want to learn how to do this? In this context, we have prepared a…

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What is the Master Plan and what is it for

master plan

A master plan is a document that aims at urban planning and its development policy. Therefore, it indicates what will be preserved and which buildings are allowed in each region of the city. Despite being little considered, the Master Plan interferes with the lives of the entire population. A simple example is the creation of planned subdivisions. They are implemented in strategic locations and provide all the necessary infrastructure for residents. After all, this is already provided for in the document. However, there are more details to consider. Therefore, in this post, we will explain better…

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Method of Analysis of Machine Foundation

There are various methods of analysis for machine foundation. They include: Empirical methods Elastic half space method Lumped parameter method Barkan’s method Among these methods lumped parameter method and barkan’s method are most popular widely used. Empirical methods | Method of Analysis of Machine Foundation The empirical methods suggested by Tschebotarioff and Alpan can be used for preliminary design purpose for the different soil types. However, these methods can be used only to check the occurrence of resonance which in itself is not adequate for a satisfactory design. Elastic Half Space…

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Forced Frequency Dependent Exciting Force with Viscous Damping

responsive curve for rotating spring

Introduction to Forced Frequency Dependent Exciting Force with Viscous Damping Some machines like Turbo-generators produce unbalanced force which imparts into the foundation-soil system frequency dependent exciting force. In Turbo generators two counteracting masses are placed at an eccentricity, e. This is shown in Figs. 1(a) and (b). The masses are so placed that they reach the top simultaneously. The rotating force of each mass is given by,  ———-(1) Referring to the figure and resolving the force horizontally and vertically we got the total vertical force as:    ———-(2) And horizontal forces…

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Forced Vibration of a Mass Spring System with Damping

forced mass spring dashpot system

In foundation soil system damping is always present in one form or another. For this case fig. 1 (a), the equation of motion is:   ———-(1)   ———-(2) The solution of equation (2) is done by applying the concept of rotating vector. In the figure 1 the exciting force vector Q­0 is placed with a phase angle ahead of the displacement vector A. The equation of displacement may be expressed as:   ———-(3) In figure 1 (b) the position of motion vector is shown. In figure 1 (c) the position…

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Forced Vibration of a Mass Spring System without Damping

force vibration of mass and spring

In the case forced vibration of a mass spring system without damping the mass spring system is acted by a periodic oscillation force and the damping is absent. Unbalanced rotating machinery such as compressor piston produces such type of motion. This is shown in fig.1 (a). For this case the equation of motion can be written as: ———-(1) The solution of equation includes the solution for free vibration and solution satisfying the right hand side. Concept of rotating vector is used to solve the equation (1). s per the vector…

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Free Vibration of a Mass Spring System with Damping

free vibration system with viscous damping

Fig.1 (a) shows the free vibration of a system with damping. A device known as damper is shown in the figure below. The damping force acts in the opposite direction to that of oscillating mass. The equation of motion for this case can be written as:   ———-(1) Where, c = coefficient of viscous damping Or,   ———-(2)   Or,   ———-(3)   Put then     And   ———-(4) By substituting the value in equation (3) we have,   ———-(5) The solution for can be written as:   ———-(6)…

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Free Vibration of a Mass Spring System Without Damping

free vibration without damping

Fig.1 gives the different stages of a freely vibrating system without damping. In Fig.1(c) the displacement ‘z’ from the position of static equilibrium at a certain time ‘t’ is shown. The static deflection is given by, ———-(1) Fig.1 (f) shows the free body diagram of the system. Applying Newton’s second law we get, ———- (2) Or, ———- (3) Or, ———- (4) Or, ———- (5) Put ———- (6) Then ———- (7) By substation the value from equation (6) and (7) in equation (5), = 0 ———- (8) Or, = 0 ———-…

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Theory of Vibration | Simple Harmonic Motion

free vibration without damping

Theory of Vibration The response of a machine foundation is generally analyzed by Lumped Parameter Approach. In this approach the foundation is represented quite well by a mass, spring and a dash-pot and the problems are usually studied under following headings. Free vibration of a mass spring system without damping Free Vibration of a mass spring system with damping Forced vibration of a mass spring system without damping Forced vibration of a mass spring system with damping The properties of Simple Harmonic Motion are to be understood clearly to make…

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Types of Machines | Types of Machine Foundation

machine foundation types

In the article Types of Machines | Types of Machine Foundation, we are going to discuss about different types of machine and machine foundation Types of Machines Machines are categorized into three major groups. They are high speed machines, low speed machines and impact machines. Low speed machines | Types of Machine Compressors and reciprocating engines come under this category. They produce unbalanced forces. The speed of such machines is usually smaller than 600 rpm. High speed machines | Types of Machine Turbo rotary compressors fall in this category of machines. These…

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