Lesson: Robot mechanics
3-) Design your own original determined by the dimensions and Cartesian (PPP), Cylindrical (RPP), Spherical (RRP), the vertical axis (Scar) (RRP) or joint (RRR) manipulator forward and inverse kinematic calculations for a medical Denavit-Hardenberg by filling in the table write the solution approaches.
In: Mechanical Engineering
Water is heated in a mixing chamber by mixing it with hot water coming from a heater. The mixing chamber loses heat to the surroundings at a rate of 5 kW. The hot water enters the mixing chamber at a rate of 1 kg/s. The mixed water leaves the chamber fully mixed. - The cold water enters the mixing chamber at 200 kPa and 20°C at a velocity of 3 m/s - The hot water enters at a pressure of 100 kPa and 150°C at a velocity of 2 m/s - The surroundings temperature is 10°C The mixture leaves the chamber at 150 kPa and 70°C at a velocity of 5 m/s. What is the mass flow rate of the cold water and the rate of entropy generation in this process?
In: Mechanical Engineering
In: Mechanical Engineering
Determine the magnitude and direction of the principal voltages for the voltage state given by ??? = 200, ??? = 400, ??? = −100 and ??? = ??? = ??? = 0 (all in MPa). Sketch Mohr's voltage circles in the ?? - plane and draw in the xy - plane the direction of its main voltages, coupled to the correct main voltage.
What is the greatest shear stress for this stress state?
Please explain the answer clearly and in a way easy to follow as I am still just a beginner. Thanks in advance!!
In: Mechanical Engineering
Using a large bucket whose volume is known and measuring the time it takes to fill the bucket with water from a garden hose, determine the mass flow rate and the average velocity of water through the hose.
***Note: It is an experiment you need to do it at home. Instead of a garden hose, you can use the same method on a faucet in your kitchen or in your bathroom. Explain the steps that you follow with actual photographs and numbers from your measurements
In: Mechanical Engineering
To transmit 75 kW at 25 rev/s using 48 mm diameter shafting. The flanges are to be made of cast iron and keyed to the shafts, and power is transmitted from one flange to the other by a circle of fitted bolts (four are shown in the above figure but more or less bolts can be used). The adopted bolts must comply to the following technical specification: Property Class Designation: 4.6
Nominal size range: M5 – M100 (Sizes M5 to M45 are commonly used in construction)
Material and Treatment: Low or medium carbon steel
Tensile Ultimate Strength, 400MPa, Minimum.
Tensile Yield Strength, 240MPa, Minimum.
CALCULATE THE FOLLOWING
Key analysis,
Hub analysis
Flange (web) analysis
Bolt analysis.
In: Mechanical Engineering
What is the acceleration of the 62 kg block if θ = 34, μ s = 0.4, and μ k = .3? Round your answer to three significant figures.
If the block starts from rest at the position L = 25 m, how fast will it be traveling when it reaches the bottom of the incline? Round your answer to three significant figures.
In: Mechanical Engineering
The beam is fixed-supported at B and free at A. Find the function, in terms of x, for the internal shear force in the beam.
Wo = 2 kip/ft
P = 5 kip
L = 8 ft
Input the terms of the function for the internal shear force in the beam. The function has the form: ax2 + bx + c (Units: kips)
Note that a, b and/or c may be 0.
Round answers to the nearest tenth.
Be sure to include the correct sign (+ or -).
In: Mechanical Engineering
In: Mechanical Engineering
Write a technical brief about non-traditional production processes of Hybrid Electrochemical processes and Express it very technical aspects
In: Mechanical Engineering
1) Find out the standard time using the following data:
Average time for machine elements = 6 min.
Average time for manual elements = 4 min.
Performance rating = 110%
Allowances = 10% of normal time
2) The actual observed time for an operation was 1 minute per piece. If the performance rating of the operator was 120 and a 5 per cent personal time is to be provided, the standard time in minute per piece is:
In: Mechanical Engineering
In: Mechanical Engineering
Under normal operation, a dairy plant requires 4 kg/s of saturated steam at 2 MPa, which is extracted from the turbine of a cogeneration plant. Steam enters the turbine at 8 MPa and 500 ºC at a rate of 11 kg/s and leaves at 20 kPa. The extracted steam leaves the process heater as a saturated liquid and mixes with the feedwater at the constant pressure. The mixture is then pumped to the boiler pressure. Determine. (a) the rate of process heat supplied, (b) the net power output and utilization factor for this operating condition, (c) the maximum process heat that this cogeneration plant can supply, (d) the net power output when there is no need for process heat.
Please reference all tables you use. Thanks.
In: Mechanical Engineering
how we can safe guard global warming?
In: Mechanical Engineering
The working gas of a thermodynamic cycle is air(assume constant specific heats.)The gas originally starts at 100kPa, 4m3and 27oC. It undergoes a four step process:Process A-B: The gas is compressed at constant temperature to one-fourth of its volume. Process B-C: The volume of the gas is then doubled at constant pressure. Process C-D:The gas then undergoes an adiabatic expansion.Process D-A:The gas then undergoes a constant volume process back to its original statea) Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and quality factor (T, P, V, U, H, S & x) at the start of each process.b) Make a table of the change in internal energy, heat flow, work done, change in enthalpy, and change in entropy (U, Q, W, H, S) during each leg of the cycle.c) Draw a well-labelled P-v diagram (indicating lines of constant temperature.)d) Calculate the thermal efficiency of the cycle.
In: Mechanical Engineering