Maschinendynamik

Dresig, Hans; Holzweißig, Franz

doi:10.1007/978-3-642-29571-3

Cited by 26 publications

(20 citation statements)

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“…where is the natural frequency [20] of the three-DOF vibration model shown in Figure 3, is the damped natural frequency [19], which can be expressed as = √1 − 2 , being the damping ratio, = /2√ ; = / and Δ = (1 − 2 ) 2 + 4 2 2 . , , and shown in Figure 3 are given in Table 1 according to the structure of the punching press [20], where 1,2 belong to damping ratios of steel for engineering mechanism, which were assigned as 0.020 [21], 3 = 0.16/ √ , and is the total mass of the punching press and the foundation block [21,22]. , , and were assigned as = 2076 kg, = 0.02 m, and = 300 rpm in the present study.…”

Section: Vibration Mechanicalmentioning

confidence: 99%

Vibration Control of a High-Speed Precision Servo Numerically Controlled Punching Press: Multidomain Simulation and Experiments

Xia

Long

et al. 2017

Shock and Vibration

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A three-degree-of-freedom mathematical vibration model of a high-speed punching press was developed in order to explore the vibration modes of the punching press. A multidomain model of the punching press was established to predict the kinematic state during different conditions, as well as the effects of load fluctuation on the motor speed. Experimental measurements of the acceleration of the punching press were carried out. The results comparison reveals that the multidomain model is consistent with the vibration model and the experimental measurements. Modal analysis and structure modification of the punching press were conducted. The foundation at the base of the punching press was improved against excess of vibration. The effects of the dimensions of the foundation on the vibration were discussed with the aid of the multidomain model. Finally, proper foundation design, able to reduce the vibration, was obtained.

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Section: Vibration Mechanicalmentioning

confidence: 99%

Vibration Control of a High-Speed Precision Servo Numerically Controlled Punching Press: Multidomain Simulation and Experiments

Xia

Long

et al. 2017

Shock and Vibration

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show abstract

“…In this case, helical springs are chosen. The excitation of is done by an eccentric drive, installed to excite the mass 90° to the lever [4]. The springs with their particular stiffness are defined as and .…”

Section: Determination Of the Conveyors Dynamic Modelmentioning

confidence: 99%

Two-mass linear vibratory conveyor with reduced vibration transmission to the ground

Sturm¹

2017

Vib. proced.

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Abstract. Linear vibratory conveyors are common equipment to convey goods. They are used in different industries such as for example the building, mining and food industry. The systems are mainly used for the supply of bulk goods into further processing operations. The goods to be conveyed, typically requesting a heavy-duty design of the conveyor and eccentric excitation drives with relatively high torque. A supply of strong vibrations to the floor is an effect, which often is caused by vibratory conveyors. The target of this article is to determine a dynamic model, based on a two-mass absorber system, helping to avoid the transfer of vibrations to the ground. An optimum supply of goods by the same time should be ensured.

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“…Diese Forderung ist in der Messpraxis nur näherungsweise zu realisieren, so dass es stets zu einem Übersprechen kommt. Durch eine experimentell ermittelte Koeffizientenmatrix lässt sich das Übersprechen deutlich vermindern [19,22].…”

Section: Magnetoelastische Kraft-und Momentenaufnehmerunclassified

“…5.3 die dynamische Masse, die Federkonstante und die Dämpferkonstante errechnen. Hierfür wird auf die weiterführende Literatur verwiesen [12,22,23]. Als einfaches Beispiel wird die Ermittlung der dynamischen Masse an einem Pendel behandelt.…”

Section: Beispielunclassified

Praxiswissen Schwingungsmesstechnik

Kuttner¹

2015

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Maschinendynamik

Cited by 26 publications

References 0 publications

Vibration Control of a High-Speed Precision Servo Numerically Controlled Punching Press: Multidomain Simulation and Experiments

Vibration Control of a High-Speed Precision Servo Numerically Controlled Punching Press: Multidomain Simulation and Experiments

Two-mass linear vibratory conveyor with reduced vibration transmission to the ground

Praxiswissen Schwingungsmesstechnik

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